Yes, there's apparently a Pokémon-themed gym opening up in Osaka (Japan) later this month.
My biggest surprise there is that one didn't already exist, but we'll gloss over that.
Gigazine recently visited the Pokémon Gym and has a pretty substantial gallery of images from the trip.
The attractions at the gym run the gamut, from fairly standard exercise equipment that's just cosmetically Pokémon to custom-designed interactive workouts. There's also a Pokémon-themed snack bar, theater and gift shop.
Unfortunately - there aren't any Pikachu taking on Geodudes for a Boulder Badge, but we'll still hold out hope for that.
You can check a number of the images out below, or check out the link above for more, as well as videos from the gym.