Citadel City

Citadel City is the fourth hub in Crash Team Racing. It is also the final secondary hub world in the game. The boss for Citadel City is Pinstripe Potoroo, who can be challenged once all sixteen trophies are collected before the player faces Nitros Oxide. This world houses some of the game's hardest tracks.

Track Listing
N. Gin Labs

Cortex Castle

Hot Air Skyway

Oxide Station

Pinstripe's Challenge (Hot Air Skyway)

Nitro Court

Characteristics
The architecture of Citadel City bears a strong similarity to that of Cortex Castle in Crash Bandicoot.

It is also possible that a link between Citadel City and Cortex Castle may exist due to the Neo Cortex Airship which can be seen from a ledge within Citadel City. Or, Citadel City itself is actually Cortex Castle.

Trivia

 * At the portal to the Cortex Castle track, surrounding it are stained glass windows with mug shots of the bosses in Crash Bandicoot 3: Warped.
 * Citadel City is the only hub world in CTR that has one entrance/exit, that being connected to Glacier Park.