Was New York City built on swamp ground?
There was quicksand in the Times Square area. In 1904, the Hotel Darlington was being constructed on West 46th between 5th and 6th Avenues and it collapsed killing 25 workers because it was partially built on quicksand. The owner of the Hotel Patterson on the 47th St side of the block had quicksand trouble when building his hotel and had to go down 30 feet efore they hit bedrock.