Where in 1884 in the U.S. was the first roller coaster built?
The first roller coaster in America opened on June 16, 1884 at Coney Island, in Brooklyn, New York. Known as a switchback railway, it was the brainchild of LaMarcus Thompson. It traveled approximately six miles per hour and cost a nickel to ride.
Thompson based his design, at least in part, on the Mauch Chunk Switchback Railway which was a coal-mining train that had started carrying passengers as a thrill ride in 1827.