Mentioned by London x London
The London Sightseeing Guide: 39 Unmissable Things to do in London
"London’s most famous and beautiful church is a definite must-see in the city. Rebuilt in the 13th century (but with a history that goes back even further), it is now on the UNESCO World Heritage List. To visit as a tourist you’ll need to buy a ticket either online or at the abbey, but you can enter free as a worshipper."