Plan A Visit to GEM

2021 Winter Season Hours:

The GEM Store, Oldman Research Library and the Main Gallery (Doc Culleton Building) is open most weekdays: 10am – 4pm

Please call before you visit to make sure we are open!

2021 Summer Season;

Attention for Summer 2021 Opening and Events

The Grand Encampment Museum opens for the 2021 summer season on Saturday, May 29.    The operating hours for this season have changed and will be Tuesday-Saturday, 9am-5pm and Sunday, noon-4pm.  We hope to see you here at the GEM of Southern Wyoming and have a great summer!

Guided Tours for families and groups in Summer:  Offered during our Summer Season.  Tours are first come first served.  For large groups it is recommended that you call ahead and schedule a tour so we can provide you the best experience!  Call 307-327-5308 or email

The Research Library is available to the public and upon request! Please call to schedule a research time: 307.327.5308


Questions?  Call 307.327.5308 or email

Our Mission
Grand Encampment Museum preserves and interprets the history of the Upper North Platte Valley. It provides the public with access to historical sources and experiences, as well as a place for research and to educate all generations.