A small island in Lake Malaren in Sweden which was a migration period trading and industrial post in the 1st millennium AD. There are several important artisans' (brooch, bead) houses spanning of the 5th-6th centuries up to the 9th century. Exotic finds include a 7th-century Buddha from Kashmir, a Coptic ladle, a number of gold coins, and Rhenish pots. The molds and debris from the brooch-making provide a great deal of new information about the development of this craft up to the beginning of the Viking period. Helgö was probably abandoned before the end of the 9th century.