The strikingly beautiful Riddarholmskyrkan, on the equally pretty and under-visited islet of Riddarholmen, was built by Franciscan monks in the late 13th century. It has changed religious hands a few times as Sweden's own religious identity has shifted, with several additions made to the church. Seventeen Swedish monarchs, from Magnus Ladulås in 1290 to Gustav V in 1950, have been buried here, a tradition that is expected to continue. Look out for the wall plates that display the ornate coats of arms of the Seraphim knights; the Order of the Seraphim is Sweden's highest award of chivalry. Look out for the marble sarcophagus of Gustav II Adolf, Sweden’s mightiest monarch, who died in 1632.
Apart from occasional concerts and special events, Riddarholmskyrkan is open only from mid-May to mid-September. There’s a guided tour in English at noon (included with admission). Holiday closures are frequent; check the website for updates. Admission fee is by credit card only. Riddarholmen is easy to reach by footbridge from the Gamla Stan tunnelbana station. The water's edge at Ridderholms also provides one of the most stunning sunset views in Stockholm.
