The mirrored dome of Perlan covers huge geothermal-water tanks on Öskjuhlíð hill, about 2km from the city centre. The wrap-around viewing deck offers a tremendous 360-degree panorama of Reykjavík and the mountains. There’s a cafe (often busy with tour groups), so in a downpour you can admire the same views over coffee. The top of the dome contains the high-end Perlan dinner restaurant.
Two artificial geysers keep small children enthralled. Numerous walking and cycling trails criss-cross the hillside; one path leads down to Nauthólsvík beach .
