Bellinzona (Dominated by its three castles: Castelgrande, Castello di Montebello and Castello di Sasso Corbaro) Biel Bremgarten Brugg Bülach Chur Delémont...

architecture. Vaults, doors, windows, stairs and chimney Barrel vault at Loarre Castle, Spain. Ribbed vault at Newcastle Castle, England. The portal of...