1. Union Square is a bustling commercial and cultural district located in the heart of San Francisco. It is known for its vibrant shopping scene, luxurious hotels, and exciting events. The square itself is a public plaza surrounded by historic buildings, art installations, and public art displays. Some interesting facts about Union Square include:

- The square was originally established in 1850 as a public gathering place and was named after the pro-Union rallies that took place there during the Civil War.

- It is home to the tallest Christmas tree in San Francisco, which is decorated with more than 33,000 glittering lights each holiday season.

- The square is often used as a filming location for movies and TV shows, including \"Vertigo,\" \"The Wedding Planner,\" and \"The Bachelor.\"

2. The shops and restaurants in Union Square operate on varying schedules, but most are open daily from 10am to 8pm. Visitors are encouraged to check the hours of individual businesses before their visit. The Union Square Visitor Information Center can be reached at (415) 781-7880 for more information.

3. Admission to Union Square is free and open to the public. The square is easily accessible by public transportation, including the Powell Street BART station and multiple bus lines. There are also several parking lots and garages located nearby for those who choose to drive. Visitors are advised to plan their transportation in advance, as traffic in the area can be congested.