First giga rollercoaster
Who
Millennium Force
What
first first
Where
United States (Sandusky)
When

Built by amusement park engineering company Intamin (Switzerland), the first giga coaster to be opened to the public was Millennium Force at Cedar Point park in Sandusky, Ohio, USA, on 13 May 2000. A giga rollercoaster must be complete circuit (i.e., there are no stops in the track from start to finish) and reach somewhere in the range of 300–399 feet (91.4–121.6 metres) in height. At its highest point, Millennium Force stands 310 feet (94.4 metres) tall.

According to the Roller Coaster Data Base (rcdb.com), the Millennium Force is also the ninth fastest rollercoaster in the world, as of May 2016, reaching up to 93 miles per hour (149.7 kilometres per hour).