Update: 3/3/20 There is a fire in the Santa Ana Riverbed. Stay safe.What a beautiful, FLAT, green place to take a leisurely walk in nature! Took my 8-year-old niece on a weekday and just saw a couple of other hikers and horseback riders. The best part of Hidden Valley is the spectacular views of the green hills and snow-capped mountains in the distance. I visited in late January.The Nature Center is only open to the public on Saturdays from 10-4. It’s open Tuesday-Friday by appointment only. The entire road to it was actually closed for maintenance when I visited. Parking is $5 on the honor system.

This is a great place to hike. Head to the nature center and even if it isnt open they have fun areas around the center for kids to play.

Great place to go and not really have to worry about being to close to someone . I enjoy it everytime I go .

Awsome quiet place for some peace

The best things in life are free...

Beautiful place to walk your dog, bike, go horse back riding, or even just go for a run.

Nice, tranquil walk along the valley. There were several photo spots and benches to sit and relax. Perfect place to bring some food and have a picnic!

This is a nice place to take your kids. Its an educational experience, and if you check them out online, you can see what events are coming up in the near future. The park is inside hidden valley, at the end of the drive. Every time I take my son, I make sure to hit the trails, sometimes all the way to the river, and walk around the nature center. The park and nature center are always clean, and the people Ive encountered here, hiking, cycling, horseback riding, or whatever, are almost always friendly. Definitely worth it to spend a day here, or even just a few hours.

Phenomenal Nature Center with friendly and knowledgeable staff. You can spend days on the unique and winding trails!

Beautiful spot but I would like to see it be more maintained. A couple years ago there was many ponds probably about 10 now there’s on 1 and it’s just a small puddle I wish that one day they get refilled and the park is more maintained and overgrown than how it used to be. I am also curious about this weird house in the feild

I liked the way the trails have been carved into the natural terrain, snaking down toward the pond level. I sat on a bench that was well situated, facing an amazing picturesque, framed view, watching birds of wide variety of species flying and landing on the tree s canopies. I was impressed by The collection of fossils, as well as the sky and land animals specimens that were on display at nature center hall. it was an enjoyable and educational experience. The staff there was very nice and responsive to my questionings about the animals on display and the park.

The horse trails are awesome. Bamboo tunnels create a 10 deg cooler ride in the summer and plenty of sandy dry areas to ride in the winter. I feel lucky I live in Norco and have this great place to ride in..

My family and I have always loved this nature walk. Amazing scenery everytime

Rode horses today down in the preserve, the trails where impassable had to turn around. No shade as trees have been previously sprayed to kill the bamboo and they were killed also.

A beautiful view and the staff is friendly.

Still love this place, plenty to see, and lots to hike, everyone is so helpful and friendly.

A very beautiful place. I came for an event so those activities were great but the location was great as well. I got some good pictures too! Im not sure what the nature center offers when there isnt an event going on so Id recommend visiting the website or calling.

My little 2 year old has a baby class here twice a week and I wish more people knew about this very cool place for kids AND adults to both learn something new. The staff is very freindly and love their jobs!

Hadnt been here for over 7 years and took my husband and our son this past weekend and the place is still well kept and in great condition. Very beautiful place to go and even have a picnic in front on their benches. And its free.

Beautiful place for photos. Awesome horse trails.

It is disappointing that they close the gates at 4:30. You can park outside of the gates and walk in.

I really like this place its so much for kids to walk around see animals and I think its cool how people can take their horses there and go all around and be safe...

They could use better bathrooms. Walkways were still flooded when I was there. More open hours would be nice. Only open on Saturday.

Hidden Valley is a beautiful nature center with a great set of bike trails, event center grounds for many organizations like boys and girls clubs that can be reserved. Also, there are horseback trails. Its in a nice quiet location even with its close proximity to major freeways. A must visit to local residents and visitors to the area.

We do a yearly Girl Scout event here. The staff is awesome and the grounds are beautiful

It was a great place to hang out at with the kids. We were lucky and got there on Archaeology Day so we got to check out some fun vendors. My son and daughter both loved the animals inside the center. Were already planning our next visit!

A great place to hike with little kids and also offer excellent views just to sit down and relax.

This is a great spot for exploring. It does have some steep terrain so be warned but the views are breathtaking and beautiful.

Great open space to walk and explore. Pet friendly and kid friendly.

Very nice, great place for a hike, picnic getting to know nature. Very calm and peaceful.

Came here for Archaeological Day! My 3rd grade daughter and I really enjoyed it. Beautiful weather & nature reserve too.

Great Bringing Students here.

Great place to work out.

Fun educational place to visit

Great place for biking , running and walking.

So peaceful to walk in this place

I went as a parent volunteer for my sons kindergarten field trip and it was great! The tour guides were very friendly and patient with the kids. They are very charismatic in the way they educate the children. They had a whole program planned out, we had an arts and craft part, a feel and learn time with different insects, the children were able to see insect parts through a microscope, we had a mild very child amicable hike where we saw frogs and differwnt animal prints. We were able to have lunch there, the facilities were very clean. Our guides were Sammy and Louis they are exceptional!

This nature center is well maintained with several benches and shade areas. I just prefer greenery and trees. This is a bit dry and weedy for my taste.

Such an awesome place to visit

We usually take hikes around the river bottom here. On Saturdays the nature center is open. Live snakes, birds, lizards and insects. Some of which the kids can touch. Cute outdoor area with a fort, musical instruments and other activities. Camps available during the summer.

Local half day getaway

The staff and volunteers are wonderful! The children really seem to love the activities and events here. Definitely coming back here with my niece and nephew!! :D

Very cool place to come and visit. We have lived in Norco for 15 years and never went down to visit. So glad we did. Next time we will have a picnic down there.

Had a great time

Staff is knowledgeable and friendly. They have great displays, with good write ups. Love going here with my kids.

Had a really great time here on a field trip with my sons school. Educational and fun. Great staff.

Fun, clean, nice place for a walk in cool weather.

The event put on by Riverside was great for kids.

Educational, rangers were awesome

Park Rangers are very nice. Always answered all my questions.

Alright nature center. Nice hikes and trails to explore

Very nice place to visit. Great hiking trails. Beautiful views. Also the Santa Ana cycling river trail goes through the park...great ride

Great spot for nature hikes with the family

I love this place., because it is very peaceful out there. ll have to take some stars away though if the City of Riverside succeeds in its plan to install high-voltage transmission lines in the area. I will take two stars away from the Nature Center if that happens.

I enjoyed the free composting and vermicomposting programs hosted by the Waste Management.

The place is so large you quickly forget about all the urban development less than mile away

This is a hidden gem with fantastic views!! I have lives in Riverside for 44 yes and I didnt know about it!!

Great place for a walk or bike ride!

Great walking, I went with the wife and kids and we saw wild boars! A coyote and other critters while on our walk.

Hidden valley good riding and hiking but a lot of the trails today we horse people take many are over grown and havent been worked on by the county. Still good place.to ride and hike

I do community service there and i love it , the staff is great and friendly. We try our best to make the public feel welcomed. Hope that many more people come and enjoy the beautiful center :)!!!

I got to go to the 5th annual archaeology day and had a blast. I was able to work at a booth and walk a nice hiking trail. I got to see some coyotes along the way and get great exercise.

Maintained fairly well.

Nice place to take family for a nature

Nice hiking trails in the area ..

Fun place to hike

Awesome place for the family to picnic

Beautiful, great outdoors, perfect for hiking and my bike riding

Joe is mama so joe=mama

Great place to walk or ride a bike. Bike Trail is about 20 miles from Norco to San Bernardino

Fantastic views from this little gem. A great place to hike around.

They help the community by teaching conservation and how to care for the wild life in the area.

Beautiful Big Open Natural area in the middle of the city Totally worth going to see and enjoy. You can even Rent Horses just down the street and Ride the River Bed Trails thru Hidden Valley with Sunshine & Daydreams Horseback Riding !

Great time taking a hike on this beautiful southern California day

Its a very well maintained area with lots of benches and shade. Just not very picturesque to me.

Good place for relaxing, easy trails,bicycling, horses riding. Especially the Nature Center is a good place for children learning and having fun with the grateful staff.

Gorgeous place. Definitely recommend.

Nice open park for biking, horse riding, hiking, and many more.

Enjoyed the horses but the trail was over grown and the pond was dried out.

I love this place because me and my classmates went there. AND WE HAD A BLAST!!!

My favorite bike trail

Legit hike through Great trails and horseback riding ....I live 1mile from it so thats def a plus...plus its free...

Spent a lazy Saturday here. Staff was friendly and good with the kids. The frog pond was full of tadpoles and tiny frogs; I had to tear the kids away.

Beautiful place tour guides were kind of rude kept making faces at the kids

This park is horse owner friendly, many biking trails and neat little nature center with numerous events throughout the year.

Open Space 2 enjoy opportunities in nature

I have been riding there for 30yrs it use to be a beautiful place now it is full of trash and homeless people and during the summer you have all theses people with their kids using the riverbed as their own beach leaving their trash and scaring the horses and the Rangers are useless

Its ok

Great place to ride ur horse

Great place to hike in a group

Great hidden jewel

Great for spending family quality time.

Have gone for years horseback riding and walking love it

A great walk !!

Only went once for an event, looking to go back, Id try it again, but nothing to write home about. Will revise review next outing ;)

Its a well-designed nature spot however theres not anyone here two share the information very often.

Good location

Very nice

Fun and interesting place

Fantastic place i can be there all day