Twinleaf Town is situated in the southwestern part of the Sinnoh region. It is here that the protagonist of the Generation IV games Diamond, Pearl, and Platinum, and several other notable Trainers begin their Pokémon journeys. Twinleaf is the hometown of the player and their rival, Barry, and the first town known to the player in the games. It is also the nearest town to Lake Verity, referred to by residents as their local lake. North of the town lies Route 201, a junction which leads to Verity Lakefront to the west, and Sandgem Town to the east.
In the southern borderline of trees of the town sits a small pond where an 
Odd Keystone can be found, where the player can surf to reach it.
