Frohburg Castle is a castle in the municipality of Trimbach of the Canton of Solothurn in Switzerland. It is a Swiss heritage site of national significance.[1]
Balmfluh · Alt-Bechburg · Neu-Bechburg · Blumenstein · Buchegg · Dorneck · Alt-Falkenstein · Neu-Falkenstein · Frohburg · Gilgenberg · Rotberg · Steinbrugg · Sternenberg · Neu-Thierstein · Waldegg
Castles of Solothurn · Castles of Switzerland · Castles of Europe