Boston Funplex

 is a indoor amusement park located on the outskirts of,. It opened in 1999 by Funland Entertainment and was purchased by Carwardine Parks, the current owner, in 2011. It is the world's largest indoor amusement park and the third largest park in the Carwardine chain.

Roller coasters

 * Acid Trip Coaster (2007; A Vekoma Illusion coaster, once operated at as "Chaos")
 * Dragon Fire (1999; A B&M stand up looping coaster)
 * Mr. Conductor's Magic Railroad (2003; A Zamperla junior coaster, formerly known as "Kiddy Coaster" [2003-2018])
 * Redwall: Escape from Malkariss (2015; a hybrid wood-steel coaster similar to  at ; this coaster is the second-biggest indoor roller coaster in the world)
 * Sonic Boom: Blast Processing Coaster (2012; A Premier Rides LIM launched shuttle loop coaster, relocated from Las Vegas where it operated from 2000 to 2011 as "Speed: The Ride")
 * Thunder Loops (2001; A Schwarzkopf 4 loop roller coaster, has the same layout as Zonga, being the second coaster to use Anton's new loop design, the first being the black loop on Olympia Looping, Was a part of the FairCon event from 1990-2000)
 * Totally Twisted (2006; A Gerstlauer 420/4 spinning roller coaster)

Flat rides

 * Dr. Robotnik's Machine (2011; A Huss Airboat ride with the Sonic the Hedgehog license, originally going to be named Dr. Eggman's Machine until market research showed the name Robotnik was more popular)
 * Freestyle (2019; A Technical Park Super Miami ride, formerly YOLO Freestyle until people complained about the cringy name)
 * Hang Ten (2017; A Zamperla Giant Sky Chaser ride)
 * Kamikaze (1999; A Huss-TechEruo Ranger ride)
 * Orbiter (1999; A Tivoli Orbiter ride)
 * Rodeo Round Up (1999; A Huss Rodeo ride)
 * Ronald's Nightmare (2011; A Sally Corporation dark ride with the McDonald's license)
 * Scrambler (1999)
 * Sonic's Golden Ring (2011; A Larson Super Loop ride with the Sonic the Hedgehog license)
 * Starship 2000 (1999; planned to get VR and be called Starship 3000, but the plans were cancelled)
 * Turbobungee (2003; An extra charge bungee trampoline)

Kiddie rides

 * Bugs Around (1999; A Zamperla Speedway ride themed to bugs)
 * Crazy Sub (1999; A Zamperla Crazy Bus ride themed to a submarine)
 * Magic Ring (1999; a carousel style kiddie ride made from various coin-op kiddie rides)
 * Samba Balloons (1999; A Zamperla Samba Balloons ride)
 * Sky Dream (1999; A Zamperl Sun & Moon kiddie Ferris Wheel)
 * Tales' Flight (2011; A Zamperla Kite Flyer ride with the Sonic the Hedgehog license)
 * Thomas Takes Flight (1999; A Zamperla Mini Jet with train engines, formerly known as "Whistlestop Express" [1999-2018])

Restaurants and food stands

 * Cinnabon
 * Dairy Queen Grill & Chill
 * Roy Rogers (food is served in a cafeteria style with a self serve Fixin' Bar)
 * Subway
 * Taco Bell

Gift shops and games

 * Castle Arcade
 * Dragon's Den (gift shop located at the exit of Dragon Fire)
 * Kid's Stuff (A children's gift shop, was a 77 Kids by American Eagle store for the 2011 season before American Eagle decided to close all of their stores in the Carwardine chain)
 * New England Merchants (A nautical themed gift ship)
 * Redwall Shop
 * Sonic's World of Sega (A gift shop selling Sonic the Hedgehog merchandise)
 * Thomas and Friends Shop

Former rides

 * Orient Express (1999-2002; A Wisdom Orient Express kiddie coaster, replaced with Mr. Conductor's Magic Railroad)

Trivia

 * During the 2014 announcement, they announced a RMC Wooden Coaster, and kept it's identity secret until it's debut as Redwall: Escape from Malkariss.
 * When Totally Twisted was announced in 2005, it was originally called "Tony Hawk's Big Spin" in the announcement and preview video. But in 2006, Carwardine lost the licensing rights to use Tony Hawk and the coaster's name was changed to "Totally Twisted", but still retained the skateboard theme cars.
 * Thunder Loops' ad video used footage from Texas Tornado, Poltergeist, Joker's Jinx, Mr. Freeze, Batman And Robin: The Chiller and Boomerang.