The Tower of London is a must see both if you live...

The Tower of London is a must see both if you live in or visiting London due to it's historical importance. It's not gonna blow your mind but there are many interesting things to learn and see there. Recommend to go at the opening time and head straight to see the Crown Jewells as the queue tend to grow really long afterwards. Once you are in there don't be a sheep, take your time and feel free to take as many turns on the moving walkway as you wish so you can take a good look at the fascinatingly rich exhibited items.
Expect to spend there 2-3 hours.