Tjörnin Pond and City Hall

Tjörnin is a small lake in the centre of Reykjavik, Iceland, with the City Hall (Ráðhús) at Tjarnargata 11 built into its northern edge. The pond is a short walk from Austurvöllur square and Lækjartorg, and it forms a green pocket at the heart of the downtown grid. A footpath circles the water, passing bridges, small islands and a row of colourful historic houses along its eastern shore, and the area is popular with both locals and visitors for a relaxed stroll.

The pond is known above all for its birdlife. Ducks, geese and swans gather in large numbers, particularly in spring and summer when nesting is under way, and Arctic terns also arrive in season. Feeding bread is discouraged because it harms the birds and water quality, and signs near the shore explain this. In winter the pond can freeze, and the ice surface becomes a place for locals to walk or skate when it is thick enough, which is a distinctive sight in the middle of the city.

The City Hall is a modern glass-and-concrete building whose lower floor extends over the water. Inside, visitors can see a large relief map of Iceland, which gives a clear impression of the island's mountains, glaciers and coastline, and there is a café with views over the pond. The exhibition areas are generally open on weekdays, but hours can change, so it is best to confirm before visiting. Entry to the pond and the main public areas is free.

A visit typically takes 30 to 60 minutes. Spring and summer are best for birdlife, while winter offers frozen scenery and, on clear evenings, a chance of seeing the northern lights from the quieter side of the pond. The city centre location makes it easy to combine with the National Gallery, the Parliament square and the main shopping streets, and the paths are usually quiet in early morning and late evening.