
Monster is an inverted roller coaster at Gröna Lund in Stockholm, Sweden. The coaster was manufactured by Bolliger & Mabillard and is the park's largest investment to date, which a price tag of 450 million Swedish krona (approximately €44.3 million). Development and construction of the coaster took several years, and a third of the park was redesigned to accommodate it. Monster opened to the public on June 2, 2021.

Gröna Lund, or colloquially Grönan, is an amusement park in Stockholm, Sweden. Located on the seaward side of Djurgården Island, it is relatively small compared to other amusement parks, mainly because of its central location, which limits expansion. The 3.8 ha amusement park has over 30 attractions and is a popular venue for concerts in the summer. It was founded in 1883 by.

Jetline was a roller coaster at Gröna Lund in Stockholm, Sweden. It had gained worldwide recognition for its curved lift hill, an anomaly amongst roller coasters. It opened in April 1988 as a clone of the Knightmare roller coaster at Camelot Theme Park, England. In 1997 it was modified by Maurer Söhne to have a longer and steeper first drop, adding a tunnel at the bottom of the first drop. Knightmare pulled 5 g while Jetline pulls a more reserved maximum of 4.5 g.

Insane is a roller coaster at Gröna Lund in Stockholm. Insane is an Intamin Zac-Spin roller coaster. It opened in 2009. The train cars contain 4 seats with 2 on each side. When navigating the course, the trains are free to spin and flip. In 2011, a similar roller coaster, Green Lantern: First Flight, opened at Six Flags Magic Mountain.