Stockholm is my favourite of the Scandinavian capitals.

Swedish monarchs are buried in the Riddarholmen Church, which also displays the coats of arms of members of the Order Of The Seraphim (mostly heads of state).
The Vasa sank in Stockholm's harbour in 1628, only to be rediscovered in 1961, much like the Mary Rose. She was named after the dynasty founded by Gustav Vasa, who broke up the Kalmar Union (which had the Danish monarch ruling everything from Greenland to Finland) and founded the Church Of Sweden (somewhat like Henry VIII). His tomb can be found in Uppsala (below).

Like Canterbury and Esztergom, Uppsala is the religious capital of Sweden.

Notwithstanding the use of brick, Uppsala Cathedral is a work of French gothic; the main architect being Étienne De Bonneuil from Paris.