The Anna Miller Museum is located at 401 Delaware, in Newcastle, Wyoming. The Anna Miller Museum is a place where you can walk back in time and relive the old west as it was. Our main building, that houses the museum itself, was built in the 1930's. It originally was a WPA project for Company A, 115th Cavalry of the Wyoming National Guard. Many long hard hours were spent constructing the building out of hand-hewn sandstone blocks, quarried from nearby Salt Creek. This building originally had three main areas: the tack room, the stables and the sergeant's quarters, which all now house the many exciting exhibits.

The museum was named after Anna Cecelia McMoran Miller, the daughter of a pioneer family, and the widow of Sheriff Billy Miller, who was killed in what is known as the last Indian battle in this area. She was Newcastle's first librarian, a pioneer schoolteacher and school superintendent.

Included with the Anna Miller Museum complex is the Green Mountain School, a rural one-room schoolhouse of the 1890-1930's. It contains a wood burning stove, school desks, maps, blackboards, and more!

A homesteader's house is also on the property, as well as the Jenney Stockade cabin, both true models of pioneer living. The Jenney Stockade cabin is the oldest existing building of the Black Hills gold rush. It was also a stage station along the Cheyenne – Deadwood stage trail.