History doesn’t record the exact conversation that led to the naming of Thermopolis, Wyoming, but given that it was Wild West outlaw country, can there be any doubt that the first conversations probably happened in a smoke-filled room with a lot of whiskey?

For one thing, the name Thermopolis is in and of itself mighty unusual.

Thermopolis Tourism Director Jackie Dorothy has found it nowhere else in the United States.

Based on a quick Google search, there’s only one other recorded instance of its use in world history. The ruined Aquae Callidae in Bulgaria, where lies the long-lost city Terme, is also referred to as Thermopolis by historians.