The San Antonio Downtown and River Walk Historic District is an amalgamation of residential and commercial sites. 197 contributing properties and 50 non-contributing properties were taken into consideration when evaluating the area for the National Register of Historic Places (NRHP) and also for the Recorded Texas Historic Landmarks (RTHL). The more than a century of economic growth and business/tourist development beginning in the mid-19th century is reflected in the city's architecture.