Fort Yellowstone, Military base in Mammoth Hot Springs, United States.
Fort Yellowstone is a military base in Mammoth Hot Springs within Yellowstone National Park in the United States. The compound holds 35 preserved structures from the 1890s, including officers' quarters, barracks, and stables arranged in a classic western military layout.
From 1886 to 1918, Company M of the First United States Cavalry protected Yellowstone National Park from resource exploitation and illegal hunting. The unit took over after civilian authorities failed to control poaching and plunder.
Scottish stonemasons shaped the sandstone structures in Colonial Revival style, including what is now the Albright Visitor Center, originally quarters for unmarried officers. The local quarry work still defines how the compound looks.
The compound now serves as the administrative headquarters of Yellowstone National Park and houses visitor services and park management. Several buildings are open to visitors, including the Albright Visitor Center with exhibits and information.
Stones from local quarries in the surrounding area were integrated into multiple buildings during the 1909 expansion phase. This regional material use shapes the compound's cohesive appearance.
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