Knight's Templar Church

In WWII, the Luftwaffe bombed this church, along with a large swathe of Bristol's Medieval buildings.  After the bombs destroyed the roof and insides of the church, archaeologists were able to dig below the rubble to prove that what Bristolians had always claimed was actually true: the church had once been round.
The round church (now marked out by the stone path shown in the photo) was once part of a monastery built in the 1130s by the Knights Templar. The Knights designed their churches round to look like the Church of the Holy Sepulchre in Jerusalem.
Between 1300 and 1450, the church was gradually enlarged to its present rectangular shape. 
This area of Bristol is still called Temple, after the Templars.