This is the most imaginative use of an ancient construction I have ever seen. Houses built underneath the arches of the Roman aqueduct, at the town of Evora.
Those 3 shots are my entries for the b&w photo contest hosted by @daveks as well as a preview of the second part of my trip to Portugal!
Focal Length:15 mm Aperture: ƒ 10 Shutter: 1/320 s ISO:200
Focal Length:15 mm Aperture: ƒ 7,1 Shutter: 1/125 s ISO:200
Focal Length:15 mm Aperture: ƒ 4,5 Shutter: 1/60 s ISO:1000
The pictures were taken by me with my Canon EOS 7D and a Canon EF-S 15-85mm lens attached.