Relax, this isn't a church that was flooded, but a sewage pumping station in London, England, that looks like a cathedral. The Abbey Mills pumping station was built between 1865 and 1868, back when people built things to look good even when they weren't required to.
Designed by architect Charles Driver and engineers Joseph Bazalgette and Edmund Cooper, the Cathedral of Sewage has a cruciform layout with intricate Byzantine architecture, a special touch that earned it a place in the United Kingdom’s Statutory List of Buildings of Special Architectural or Historic Interest. Not to mention, the fascinating building got a starring role in Batman Begins (2003) as the Arkham Asylum Laboratory with the Scarecrow and Rachel Dawes.
The pumping station has been out of commission for years, but you can see it by booking a tour. See incredible pictures of the interior at When On Earth. -via the Presurfer
(Image credit: Velela)