Union Square

Union Square is a 2.6-acre (1.1-hectare) public plaza bordered by Geary, Powell, Post, and Stockton Streets in downtown San Francisco, California, United States. The name of this location also refers to the central shopping, hotel, and theater district that surrounds the plaza for several blocks. The area obtained its name since it was once used for Thomas Starr King rallies, as well as support for the Union Army during the American Civil War, earning its designation as a California Historical Landmark.

Today, this one-block plaza and surrounding area is one of the largest collections of department stores, gift shops, art galleries, upscale boutiques, and beauty salons in the United States, making Union Square both a major tourist destination and a well-known gathering place in downtown San Francisco. Grand hotels and small inns, along with off-Broadway, repertory, and single-act theaters also contribute to the area's dynamic, 24/7 character.