Väddö is an island in the Baltic Sea in Roslagen district,

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

. It is situated in Norrtälje Municipality. Together with the adjoined Björkö it is considered the seventh largest island of Sweden. Väddö is separated from the mainland by the artificial

Väddö Canal The Väddö Canal ( sv, Väddö kanal) is an artificial canal first dug in the 16th century to provide a sheltered passage between the to the south and the to the north. The canal separates the island of Väddö from the mainland, and passes thr ...

, first dug in the

16th century The 16th century begins with the Julian year 1501 ( MDI) and ends with either the Julian or the Gregorian year 1600 ( MDC) (depending on the reckoning used; the Gregorian calendar introduced a lapse of 10 days in October 1582). The 16th cent ...

See also