The free Golden museum with a moon rock and a room of glowing stone

Golden grew up around a school for mining engineers, and the Colorado School of Mines still keeps a museum that quietly proves the point. The Mines Museum of Earth Science sits on campus at 1310 Maple Street, and it costs nothing to walk in.

Two things tend to surprise first-timers. The first is a real piece of the Moon: one of Colorado’s two “Goodwill” lunar samples, brought back by the Apollo 17 crew and given to the state. The second is the indoor cave, where the lights go low and certain minerals glow in deep reds, greens, and blues you’d never guess from their plain daytime look.

Around those two stops, the collection runs deep. The museum holds more than 40,000 items, with a few thousand on display at a time, and it serves as the state’s official repository for Colorado minerals. That makes it a fitting place to understand why ore and rock built this town in the first place.

It’s an easy, all-ages stop, and admission is free. Check current hours and any holiday closures on the museum’s official site before you go: https://museum.mines.edu/