Who knew? Not me, but British urbanite Tom Scott did. Rubble from Bristol, England comprises the landfill for Waterside Plaza on the east side of Manhattan. Post-WWII the British city had many bombed-out buildings, material that was brought back to the US from the UK in ships that used it as ballast. I was at the plaza a couple years ago for a conference, though I had no idea then that the example of modern architecture has this unlikely origin. Check out the video by Tom Scott. H/t my English friend Garry Benfold who brought this cool city story to my attention.