The IMa Training Park is a resort-like area set up by IMa for monsters and breeders to attend and get individual training while working toward the Legend Cup. Genki and his team stop here in Episode 64 of the anime series, marking the first time the team has split up since Genki returned to Pangaea.
Monsters are separated by species and given areas to train in. There are drills, instructors, and even monster coaches for assistance. While the Searchers are there, Most drops by.
The park is on the coast of Kawrea, near the Kawrea Volcano. It is actually one of the ranch location options in My Monster Rancher, but it is called Emo Land (possibly a typo of "IMa Land").