Westminster Abbey, formally titled the Collegiate Church of St Peter at Westminster, is a large, mainly Gothic, church in the City of Westminster, London, located just to the west of the Palace of Westminster. – Wikipedia
The coolest thing about this sightseeing destination is all of the historically people that are buried inside. You can actually walk through the crypt and see where these people lie to rest.
This place was so cool. You have to take your time when you visit. Explore all the crypts, too cool!