Fredriksskans, Sconce site in Gävle, Sweden

Fredriksskans was a sconce on the small island of Blockhusharen in the strait between Gävle's inner and outer firths. Built in 1717 and armed with ten cannons, it was a provisional earthwork. It was demolished in 1902 for Gävle's new harbour; a 4.5-metre red granite memorial stone with a bronze relief now stands on the site.

The fortification was built in 1717 during the Great Northern War as part of Sweden's coastal defense strategy. It formed part of a broader defensive line designed to protect against the naval powers of that era.

The name Fredriksskans replaced the earlier Hugoskans, after governor Hugo Hamilton (1655–1724). The second company of the Norrland Artillery Regiment in Östersund was named Fredriksskans kompani after the site. A bronze relief of the sconce is set into the memorial stone that marks its former position.

The sconce no longer exists: the city of Gävle demolished it in 1902 for its new harbour, so there are no grounds or walls to tour. What remains is a 4.5-metre memorial stone of red Norrtälje granite, with an inscription beneath a bronze relief showing the sconce, standing on the site.

The sconce was demolished in 1902 for Gävle's new harbour, so no walls remain. On its site stands a 4.5-metre memorial stone of red Norrtälje granite, with an inscription beneath a bronze relief showing the sconce. A model of Fredriksskans is held at the Army Museum, formerly in the fortification archive.