The first thing to note about the Tower of London is that it’s pretty steep to get into, at £25 for an adult! This is up from £22 when I last went, in October 2013.
One of the sights that was of limited interest to me at the time was the supposed spot where Henry VI was murdered. Having since then enjoyed watching Benedict Cumberbatch's Henry being murdered in the fabulous 'Hollow Crown' adaptation of Shakespeare's trilogy, I now appreciate it all the more.
As others have mentioned, the Martin Tower is an unexpected pleasure – within an unprepossessing corner tower unconnected to the main Crown Jewels building you suddenly find yourself face-to-face with a selection of glinting crowns.