Book Your Lone Tree Inn Room

The MonDak Heritage Center Sidney is a museum dedicated to the history of the MonDak region. The museum features exhibits about the Native American tribes that lived in the area, as well as displays about the mining, agriculture and railroad industries that flourished in the region during the 19th and 20th centuries. The museum is open daily from 10am to 5pm, and admission is free.

The Old Fort Gilbert Sidney was constructed to protect the newly-acquired territory of the United States from attack by the Mexican government. The fort was named for General William Sidney Smith, who served as Governor of Texas during its annexation. The fort was abandoned after the Mexican-American War concluded with the Treaty of Guadalupe Hidalgo. Today, only a few scattered ruins remain.

Fort Buford State Historic Site Sidney is a restored military fort located in the town of Sidney, Minnesota. The site was listed on the National Register of Historic Places in 1975. Today, the fort is operated as a tourist attraction and museum. The fort's main building is currently used as a visitor center and theater, while other buildings are used for storage or exhibit space. The grounds include a reconstructed military parade ground and a cemetery.