Possible Destination for an interstellar cruise ship?

[Astromancer]

How about breathable for a certain value of breathable. Picture a low gravity world with an atmospheric density like that of the high Himalayas. Technically breathable, but not very. The vast geodesic domes or supersize tents could hold an atmosphere that allowed comfortable breathing and human powered flight.

Alternatively, a deep lake could be pumped dry or a deep crater created that would naturally have a denser atmosphere.