Tanren Undercity

Tanren Undercity, referred to by players as undercity or sometimes TU, is a city settled under the Tanren region. Its entrance is located at Tanren's Archaeological Digsite. To access the main entrance of TU, Rock Smash and Rock Climb are required.

Central Fork
This is the central part of TU, which is the connection to all the areas in TU.

Mansion
There is a mansion located northwest in the Central Fork. Trying to enter any of the curtains here gives the message "Perhaps you shouldn't enter this room..." Going to the wall in the middle gives the message "The structuring of this wall seems pretty fragile... Perhaps if you had the right move, it could be broken." Using the move Rock Smash on the wall will open the entrance to the Abandoned Laboratory.

Abandoned Laboratory
The Abandoned Laboratory is accessed from the Tanren Undercity Mansion. This room's only purpose is to change the Forme of Rotom.

Northern Settlement
The settlement is commonly thought as the main area in TU. Here you have access to the an Assembly, Kangaskhan's Storage, as well as a healing point (Toren's House).

There is also a Purple Kecleon here who runs a shop and sells items for Poké. Notable as this is the only shop in TU that still uses Poké, as all other shops in TU use Ekop - TU's exclusive currency.

To go to this area, go North East from the Central Fork.

Dark Market
This is one of the main features in TU. In this market, you can buy items with Ekop.

Sunken Tavern
This is a local bar in TU. You can buy some exclusive drinks in here from Sebastian using Ekop as well. Here's the list of the drinks:

Night Talons' Base
The headquarters of the Night Talons, one of the two gangs in the undercity, the other gang being the Desert Fangs. Only people with a Minun character ID have access to the Night Talons' Base.

Features located here:
 * Sven the Sharpedo can clean your Sticky or Grimy items.
 * Butch the Scrafty can open your Treasure Boxes for 150 Poké each
 * Rouge the Purrloin can sell you the following items:

Desert Fangs' Base
The headquarters of the Desert Fangs, one of the two gangs in the undercity, the other gang being the Night Talons. Only people with a Plusle character ID have access to the Desert Fangs Base.

Features located here:
 * Dorothy the Gengar can clean your Sticky or Grimy items.


 * Princess the Pangoro can open your Treasure Boxes for 150 Poké each


 * Sam the Zorua (looks like a Krookodile because of Illusion) can sell you the following items:

Dungeons
Tanren Undercity currently has 3 dungeons:
 * Dream Grove
 * Undercity Catacombs
 * Caustic Sewers

Landmarks or Houses
Under construction.

Trivia

 * Tanren Undercity was released on September 1st, 2016.
 * On March 19th of 2019, a shortcut to Tanren Undercity was added in Cognito. Undercity Catacombs must be beaten for it to be used.
 * Tanren Undercity was initially supposed to have player combat to represent rivalry between the two gangs, however the idea was scrapped in favor of earlier release.