Obviously, if you're visiting London, you're comin...

Obviously, if you're visiting London, you're coming here. Leave yourself more time than you think you should. It takes a good 3+ hours to walk and read through everything. The waking tour with a guard takes 45 minutes. Very worth it! The crown jewels are great, but the rest of the very large property is just as amazing.
Several cafes and toilets (free) on site.
Lots of stairs and uneven ground. Due to its age, it is not a very wheelchair accessible place to get to the upper floors or around the outside of the structure