Ice Cave
100 m tunnel
Built from 350+ tonnes of snow and ice at -10°C year-round
Perlan: Reykjavik's Glass Dome Museum & Observation Deck
Reykjavik's glass dome on Öskjuhlíð hill holds a nature museum with an indoor ice cave, a planetarium, and an observation deck.
Location
Öskjuhlíð Hill
Reykjavik • 10 min from city center
Quick Answer
Perlan is a glass-domed nature museum on Öskjuhlíð hill in Reykjavik with a 100-meter indoor ice cave, a planetarium, and a 360° observation deck.
Perlan (meaning "The Pearl") is a landmark glass dome building perched atop Öskjuhlíð hill in Reykjavik. Originally constructed over six large hot water storage tanks that supply the city's geothermal heating, the building was redesigned by architect Ingimundur Sveinsson and opened in 1991. In 2017, the Wonders of Iceland nature museum opened inside, with an indoor ice cave built from over 350 tonnes of real ice, a planetarium, and interactive exhibits on glaciers, volcanoes, ocean life, and the northern lights. The outdoor observation deck has 360-degree views of the capital and surrounding mountains.
Sources and page update
Updated: 2026-09-10
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Official sources to check
Observation Deck
Free access
360-degree views from the fourth floor terrace
Location
Öskjuhlíð Hill
Reykjavik hilltop, about 10 minutes from city center
What to Expect
Indoor Ice Cave
Walk through a 100-meter tunnel of real ice and snow at -10°C, with sculptures and glaciology exhibits (warm clothing provided)
Planetarium Shows
Iceland's only planetarium with 360-degree fulldome projections covering northern lights, nature, and astronomy
Glacier & Volcano Exhibits
Interactive displays on Iceland's glaciers, volcanic systems, tectonic activity, and geological forces
Observation Deck
Free outdoor viewing platform with 360-degree panoramas of Reykjavik, Mount Esja, and the ocean
Restaurant Under the Dome
Food beneath the glass dome; check restaurant hours separately from the museum
Öskjuhlíð Nature
Walking and cycling trails through the wooded hillside surrounding Perlan, popular with locals year-round
Getting There
Perlan is located on Öskjuhlíð hill, about 2 km south of central Reykjavik. Perlan lists local bus routes 13 and 18 as stopping closest; check the current transit timetable and walk from the stop. By car, follow Bústaðavegur to the hilltop; free parking is available on site. You can also walk or cycle through the wooded trails on Öskjuhlíð. The walk from downtown takes about 20-25 minutes.
Best Time to Visit
Perlan is open year-round. The museum and ice cave are indoors, so they work well on rainy or cold days. The observation deck is best on a clear day. Allow at least 2-3 hours to see all the exhibits. Booking tickets online in advance can save time, especially during the busy summer months from June through August.
Perlan’s visitor information distinguishes exhibition hours from dining hours. On September 10, 2026 it lists exhibitions 09:00–21:00, restaurant 11:30–18:00 and café 10:00–18:00. An evening museum ticket therefore does not imply dinner service. The observation deck is included with museum tickets and cannot be bought separately.
Planning help
Perlan FAQs
Quick answers with safety notes where it matters.
What is the indoor ice cave at Perlan?
Perlan's indoor ice cave is a 100-meter-long tunnel built from over 350 tonnes of snow and ice. It recreates a real Icelandic ice cave and is kept at a constant -10°C year-round. The cave has ice sculptures, light installations, and information about glaciology. Warm clothing is provided at the entrance.
Does Perlan have a planetarium?
Yes, Perlan houses Iceland's only planetarium, which has a 360-degree fulldome projection system. Shows cover topics from the northern lights and Icelandic nature to the solar system. It is included in the museum admission ticket and shows run throughout the day.
Can I visit Perlan's observation deck for free?
Perlan includes the observation deck with its museum tickets; a separate deck-only ticket is not sold. Do not plan a free deck visit. Check the current ticket and exhibition hours before going.
Is there a restaurant at Perlan?
Yes. The restaurant sits beneath the dome, and the café is on the fifth floor beside it. Their hours differ from the exhibitions, so check meal service before planning an evening visit.
Country reference: Iceland statistics.