Seaside Junction is a railroad theme area similar to the Whistlestop Park areas at Six Flags Discovery Kingdom. It was originally known as Thomas Town from 2007 to 2010 then in 2011 after Six Flags lost the rights to use Thomas and Friends, it was rethemed.
- Air Penguins - Formerly known as Harold the Helicopter
- Merlin’s Seaside Tours - Formerly known as Bertie the Bus
- Seaside Railway - Formerly known as Thomas the Tank Engine