No, you're not seeing triple - these are Pittsburgh's Three Sisters, a trio of nearly identical suspension bridges erected side by side over the Allegheny River. Rachel Carson (Ninth Street Bridge) All three were built between…

The Arches National Park in Utah, USA, is an area of unique geological formations, most famous for the huge abundance of naturally formed sandstone arches, of which over 2,000 have been formed due to the gradual…

This is the Aqueduct of Segovia, which was probably built during the second half of the 1st Century AD, and is one of the most significant and best-preserved Roman monuments in Spain. Technically, this is just…

Connecting the Danish islands of Zealand and Funen is the Great Belt Fixed Link, another example of a confusing bridge / tunnel mash-up1. Starting on Funen at the Western end we have a 6611m bridge that…

In the past we've featured some incredible feats of engineering in service of canals and their traffic, but perhaps none as elegant as the Barton Swing Aqueduct, England. Designed by Edward Leader Williams1 and first used…

Clearly visible thanks to an enormous shadow, this huge saw in Tokyo looks to be attempting to cut the city in half. Unfortunately it seems that the person using it has gotten off to a slow…