I purchased this at the Tower of London about 12 years ago while living in London. It's a bit old, but since it contains explanations of the history and buildings related to the Tower of London, the content should still be relevant. Please note that there are some scratches and stains on the cover. Approximate size: 18 x 23.5 cm x just under 1 cm thick, 72 pages. For those who are interested.