Royal Eise Eisinga Planetarium

Royal Eise Eisinga Planetarium in Franeker is the world’s oldest still-functioning planetarium, an 18th-century orrery in Eise Eisinga’s historic home. The public museum also presents astronomical instruments, Eisinga’s former wool-combing workshop, a screening room, changing exhibitions and the interactive De Ruimte space exhibit. Access requires a pre-booked ticket; hours are Tuesday–Saturday 10:00–17:00 and Sunday 11:00–17:00 year-round, plus Monday 11:00–17:00 from April 1 through October 31; it is closed Christmas Day and New Year’s Day. The building is largely wheelchair accessible with an elevator and accessible toilet, although the radar requires a steep staircase. Address: Eise Eisingastraat 3, 8801 KE Franeker, Netherlands.