Ytterby is a village on the Swedish island of Resarö, in Vaxholm Municipality in the Stockholm archipelago. Today the residential area is dominated by suburban homes.
The name of the village translates to "outer village". Ytterby is perhaps most famous for being the single richest source of elemental discoveries in the world; the chemical elements yttrium, terbium, erbium, and ytterbium are all named after Ytterby, whilst four more elements were first discovered there.
Address Resarö, Sweden
Coordinates 59°25'35.4" N 18°21'12.69" E