The town sits in a sort of bowl, surrounded by mountains and the Mammoth Hot Springs.
Most of the fort buildings were built in the late 1890s through the 1920s, so the architecture is sort of an "Army Victorian" style, very different from the rest of the Yellowstone buildings. Most of the buildings are being reused. Here is the park visitor center.
And the central loop road with a grassy area surrounded by historic buildings. The white building on the left is the park jail.
And this is the U.S. Post office. Pretty impressive, I think, and very convenient.
This is the Mammoth Hot Springs Hotel and the restaurant.
I knew from a previous drive through this town that the parking for the hot springs was very limited. With the number of people visiting at this time, I knew it would be impossible to park my motorhome in any of the three lots, so I parked across from the post office and got my bike out for the half-mile ride.
The hot springs are unusual because they are located at the top of a hill. As the water runs down, it leaves minerals behind, producing these strange formation.
These last two photos were taken from the drive at the top of the springs. I could not take my RV down the narrow road, so I parked and walked in a few hundred feet.