where was the world's first bobsleigh track built
Bobsleigh The various types of sleds came several years before the first tracks were built in St. Moritz, Switzerland, where the original bobsleds were adapted upsized luge/skeleton sleds designed by the adventurously wealthy to carry passengers. All three types were adapted from boys' delivery sleds and toboggans.
Roller coaster inversion The first inversion in roller coaster history was part of the Centrifugal Railway of Paris, France, built in 1848.[1] It consisted of a 43-foot (13-meter) sloping track leading into a nearly circular vertical loop 13 feet (3.9 m) in diameter.[4] During the early 1900s, many rides including vertical loops appeared around the world. These early loops had a major design flaw: the circular structure produced intense g-forces (hereafter "Gs"). The Flip Flap Railway, designed by Lina Beecher and built in 1895 on Coney Island of Brooklyn, United States, had a 25-foot circular loop at the end which though initially popular caused some discomfort in passenger's necks, and the ride soon closed.[5][6] Loop the Loop, another looping coaster, was built later in Coney Island as well. This time the loops were slightly oval-shaped rather than circular, though not clothoid in shape like modern loops.[7] Although the ride was safe, it had a low capacity, loading four people every five minutes (48 people per hour, compared to 1800 riders per hour on Corkscrew, an early modern coaster that opened in 1976), and was poorly received after the discomfort of the Flip Flap Railway.[7] As their novelty wore off and their dangerous reputation spread, compounded with the developing Great Depression, the early looping coasters faded and disappeared.[1]