A trip to London would be incomplete without a visit to the home of the Queen: Buckingham Palace. It’s the monarch’s administrative headquarters, and has been the official residence of the British sovereigns since 1837; it’s full of life and history. A tour of the palace will include the 19 State Rooms, the Throne Room, the Ballroom, the Picture Gallery, and part of the sprawling palace gardens. While you’re there, you should check out the Queen’s Gallery, which was built out of the ruins of the palace’s old chapel after it was bombed in World War II; the exhibitions from the Royal Collection change all the time. You can also visit the Royal Mews, and see the stables and state vehicles. Buckingham Palace is only open for tours during the summer, but it’s worth it to stop by even in the off-season. You can stand outside to watch the changing of the guard and take a look at the flagpole–the royal standard only flies when her majesty is in.