In Episode 31 of the anime series, the Searchers stumble across a large, dome-like structure that houses the ruins of an old amusement park. This is probably the remnants of the Barees Amusement Park, an errantry location that can be used in Monster Rancher 1. It is nestled on the plateau above Barees Bay.
The park boasts many rides, including a Ferris Wheel, a Hall of Mirrors (decorated with Hare statues), a spinning swing ride (decorated with a Suezo), a tube slide, a teacup ride, a large roller coaster and a Tilt-a-Whirl ride that looks suspiciously like an Octopee.
There they are attacked by the Kuros once again, as it seems they appointed a new captain after their last one died in Heaven's Canyon.