While it's not impossible to plan a trip to the UK without visiting London, it's certainly not to be advised, as the nation's sprawling capital boasts plenty of attractions to keep you busy. If history is your thing, be sure to visit the Tower of London. Beside the spectacular Tower Bridge on the banks of the Thames, this former palace and prison includes highlights such as the iconic 1,000-year-old White Tower, with its displays of armor and weaponry, and the Jewel House, home to the Crown Jewels.