Of special interest in Harlowton, located in Central Montana, is the E-57B, an electric Train Park that commemorates the longest stretch of electric railway in North America. Harlowton was first named "Merino" after the abundance of that breed of sheep found in the area. A large part of the economy was at one time base on sheep, wool and stone. May of the buildings standing there today were built from the stone that was pulled from the nearby quarry.
The Upper Musselshell has as its centerpiece is a full-size replica of a skeleton found in the Judith River Formation near Shawmut: an Avaceratops, the first dinosaur found of its kind. The museum also has a Hadrosaur tibia and fibula, a cast of a Gypsonictops jaw, numerous dinosaur leg bone and hip bone fossils, fossilized clam shells, musselshells and snails, and a large ammonite (coiled chamber shell of an extinct mollusk). The Museum, located along Montana's 'Dinosaur Trail' is open from May until September.