This major, public complex comprises an entire city block in downtown San Francisco. It offers an array of shops, restaurants, offices and apartments. The building is considered to be one of the city’s leading mixed-use properties. The original Rincon Annex building was a United States Post Office, completed in 1940. It was listed on the National Register of Historic Places in 1979. In 1988, the building was expanded to include this new 23-story mixed-use building on the south side of the block that contains a new post office, offices, and 320 apartments. In addition, two stories were added atop the original Rincon Annex building and a large atrium was cut into the interior.