Vacuo City, Route 8, and Serenity

Vacuo City

One of the largest cities in Lesion. It doesn't have a Pokemon Gym, but it does boast the region's only Contest Hall as well as a Park, the Pokemon Fan Club, and the Lesion Museum as well as a Pokemon Center and Mart.

Route 8

A slightly rocky area leading 24 miles up to Serenity. Many Hikers find it worth their while to walk the area's trails. [Wild Pokemon: Machop, Makuhita, Hitmonlee, Hitmontop]

Serenity

A town located in the rocky flats before Route 10. It has a Fighting Dojo, Pokemon Center, TM Shop, Move Reminder, Pokemon Mart, and the Serenity Pokemon Gym.