World's Scariest Roller Coasters
Kingda Ka, New Jersey
Where: Six Flags Great Adventure in Jackson.
Scary Stat: 456-foot drop.
At 45 stories, the Kingda Ka is
the tallest roller coaster on earth—closer to the sky than any Egyptian
pyramid—and among the fastest, reaching 128 mph. It’s also one of only two
existing Stratacoasters, rides that plummet more than 400 feet. (The other is
Cedar Point’s intimidating Top Thrill Dragster.) Kingda Ka shoots riders around
an upside-down U track in just 59 heart-stopping seconds. Except when it
doesn’t. Beware of
rollbacks, when, occasionally, the coaster doesn’t gather enough momentum
to pump itself over the very top and plummets backward, forcing riders to
experience the launch all over again.