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Björkö (Ekerö) — Wikipedia
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Björkö (Swedish for "Birch Island") is an island in Lake Mälaren in eastern-central Sweden. It is mostly famous for housing the excavation site Birka populated c. AD 750-975, together with Hovgården on Adelsö declared a World Heritage Site in 1993. Located just south of Adelsö and west of Ekerö and Munsö islands, it is one of the islands in Ekerö Municipality.
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