The Northeast Waterfront Historic District is bounded by Greenwich Street, The Embarcadero, Montgomery Street, and BroadwayThe district contains commercial warehouses from nearly every decade of San Franciscos history. The buildings range in age from early clipper ship warehouses in the 1850s to shipbuilding that made San Francisco Bay the major Pacific maritime support facility during World War II.Because warehouse architecture did not undergo profound stylistic changes until the introduction of reinforced concrete, brick warehouses built after the 1906 Earthquake and Fire embody the original appearance and spirit of the 19th century warehouse district.Of particular note is the block bounded by Front, Battery, Union, and Green streets, the most cohesive extant brick warehouse complex from this era in the City. In addition, cobblestone paving and the standard and narrow gauge belt line railroad track which served the district are visible at the foot of Commerce Street. The area clearly serves as a visual reminder of San Franciscos earlier maritime-warehousing commerce.