Plan A Visit to GEM

2019 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!

2020 Summer Season;

Attention for Summer 2020 Opening and Events

The Grand Encampment Museum opens for the 2020 summer season on Friday, May 22.  Come join us that day with a visit from CJ Box at 3pm.  The operating hours for this season have changed and will be Tuesday-Friday, 10am-4pm.  Also, this season we will be offering limited tours every 15 minutes after the hour.  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. For the 2020 summer season, tours will be limited to only certain buildings and offered every 15 minutes after the hour.  Also, the number of visitors allowed in a single tour will be limited. 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.