Shopping and Entertainment in San Francisco’s Union Square. Shopping, dining, and entertainment are what you’ll find in the gorgeous San Francisco neighborhood of Union Square. Union Square itself is a picturesque 2.5-acre plaza with places for sitting and people watching, having lunch or a latte, and weekend outdoor art shows. During the winter holidays, a beautiful Christmas tree and fun ice-skating rink grace the Square. Union Square is bordered by Post, Stockton, Geary, and Powell streets, as well as Macy’s, Neiman Marcus, Sak’s Fifth Avenue, and the historic St. Francis Hotel. The Powell Street line of the cable car passes right along Union Square, its charming bell ringing through the air. Just down the street from the main Square are premier performance venues like the Geary Theater, where world-class actors such as Annette Bening, Denzel Washington, Benjamin Bratt, and Elizabeth Banks have trained and performed with the American Conservatory Theater, aka A.C.T.