Subject: Well...
Author:
Posted on: 2011-06-30 11:45:00 UTC
... assuming you already have the Tower of London on your list (and who wouldn't? Crown Jewels!), my main recommendation is the Monument. Climb it and look out over London!
... assuming you don't mind 311 steps up (and down again), that is. Strangely, most people object.
hS