Tynnelsö Castle
| Tynnelsö Castle | |
|---|---|
| Strängnäs Municipality, Sweden | |
Tynnelsö Castle | |
| Site information | |
| Type | Castle |
| Location | |
| Coordinates | 59°24′44″N 17°06′01″E / 59.41222°N 17.10028°E |
| Site history | |
| Built | Oldest parts probably from the 13th century |
| Built by | Several medieval bishops of Strängnäs |
| Battles/wars | Swedish War of Liberation |
Tynnelsö Castle (Swedish: Tynnelsö slott) is a castle in Sweden. It is on Tynnelsö island in Lake Mälaren, a few kilometres north-east of Strängnäs. The castle was built during the Middle Ages by the bishops of Strängnäs.