Castelfidardo is situated on top of a hill with separates the vally of Aspio from the vally of Musone, not far from the coast. The town is world famous for its making of musical instruments in particular the "fisarmonica, organi e le pianole" (piano accordion or squeeze box). Castelfidardo has a international museum dedicated to the piano accordion.

Castelfidardo takes it name from a ancient castle of which now only remains the Door way (restored) and part of the town wall.

To visit: Museo del Risorgimento