19th century fortifications
Fort Airolo
Airolo
Hospice
Forte di Airolo (112 kB)
Airolo (117 kB)
Airolo (123 kB)
Ouvrage de l'Hospice (109 kB)

20th century: NE Switzerland
Grynau
Mittelkanal
Castels
Magletsch

20th century: central Switzerland
Gubel

20th century: central Switzerland
Halsegg
Philippsburg

20th century: central Switzerland
Zugerberg
Spitz
20th century: Central Switzerland
Vitznau
Ennetberge
Nafels
20th century: Central Switzerland
Waldbrand
Faulensee
20th century: SE Switzerland
Crestwald
Sufers
Mondascio
San Carlo