Category: bridges...

crossing a swinging wooden bridge over a gorge
jogging across the Coos Bay Bridge in Oregon
learning which bridges to cross and which to burn
Utah's Rainbow Bridge
walking across the Brooklyn Bridge, George Washington Bridge, Golden Gate Bridge, and ones over the Seine
the first bridges probably being tree trunks laid across streams
the 200 BC bridges and aqueducts of Roman engineers
a bridge that is efficient, elegant and safe, and economical
Postbridge in Devon, England, an early medieval clapper bridge
the 1,991-meter (6,532 ft) Akashi-Kaikyo bridge in Japan