Petersen Rock Garden, Rock garden near Redmond, United States

Petersen Rock Garden is a 4-acre rock garden and museum between Bend and Redmond, Oregon. Rasmus Petersen built dozens of miniature castles, churches and cottages from agate, jasper, lava, malachite, obsidian, petrified wood and thundereggs, adding bridges, lagoons, lily ponds and streams. Peafowl roam the grounds, and a small museum holds a gift shop selling rocks.

Rasmus Petersen, a Danish immigrant who settled in Central Oregon at 17, began the garden in 1935 on his family's land, using rocks gathered within an 85-mile radius. He worked on it until his death in 1952, and his family kept it for seven decades. It was listed on the National Register of Historic Places on October 30, 2013, after a 2013 restoration, and reopened in April 2026 under nonprofit operators.

Rasmus Petersen, who arrived from Denmark at 17, built monuments to his adopted country alongside designs recalling his homeland. A concrete American flag and a 7-foot replica of the Statue of Liberty stand on the grounds; a bronze plaque before the statue reads "Enjoy yourself: it's later than you think."

The garden sits 3 miles (4.8 km) off U.S. Route 97, 10 miles north of Bend and 7 miles south of Redmond. As of 2026 it is open 10 a.m. to 4 p.m., Friday through Monday, with a suggested donation of $10. Peafowl roam the grounds freely, and the museum gift shop sells rocks, crystals and fossils.

The museum building contains a fluorescent room with miniature castles crafted from materials like manganese, tungsten, uranium, and zinc that glow in darkness. These illuminated structures showcase the mineral diversity of the region and create a striking visual experience.