Kärdla is located on the northeastern coast of Hiiumaa, by the Tareste Bay; to the southeast of the town lies the 455 million year old Kärdla meteorite crater. Several small rivers flow through the town. There are also artesian wells in Kärdla. The Swedish name Kärrdal means "marsh valley"; the town is located in a lowlands valley.
History
Kärdla was first mentioned in 1564 as a village inhabited by Swedes. Its growth was greatly influenced by the cloth factory founded in 1830. A port was built in 1849. Both the port and the factory were destroyed in World War II.
Kärdla officially became a borough in 1920, and a town in 1938. In 2013 the town was merged with Kõrgessaare Parish to establish Hiiumaa Parish, therefore Kärdla lost its municipality status.
Road transport from Estonian mainland to Hiiumaa involves a 90-minute (28 km (17 mi)) ferry crossing from Rohuküla to Heltermaa, which is 25 kilometers (16 miles) by road from Kärdla. There are up to 10 ferry departures a day operated by TS Laevad.[11] In the summer weekends, getting car space on the ferry usually requires advance booking. There are about 2 scheduled buses a day between Tallinn (the capital of Estonia) and Kärdla.[12]
There are no scheduled passenger boats directly to Kärdla.
Kärdla is served by Kärdla Airport, with regular flights to Tallinn.
Kärdla town itself is small enough to get around on foot. Bicycle rental is available, and there is a good bicycle path built from Kärdla towards Kõrgessaare.
Events
June's first weekend annual Hiiumaa Children's festival takes place.
In the first week of August, the coffee-loving people of Kärdla expect visitors to Kärdla Cafés' Day celebrated just for one day in their own gardens, serving coffee and home-made pastry.[13]