Check out these bizarre circles of farmland smack-bang in the middle of the Libyan desert. This unlikely-seeming sight has been made possible by the construction of the Great Man Made River, possibly the largest water transport system ever built, consisting…

This is the ancient city of Teotihuacán, Mexico. Construction of the city began around 300 BC, with the Pyramid of the Sun (shown in our thumbnail) finished by 150 BC. The Pyramid of the sun sits in front of the…

Gibraltar is an overseas territory of the United Kingdom on the southern tip of Spain. I visited Gibraltar while on a Spanish holiday a few years back and, just like the rest of the UK, it rained a lot. We'll…

The Middelgrunden Offshore Wind Farm consists of 20 large 2MW windmills in the waters just outside of Copenhagen's harbour. Covering a length of 3.4 kilometres, the curve of the windmills is designed to be a continuation of the super-ellipse formed…

Ploughed into the Australian outback in 1998 (by persons still unknown), the Marree man is a 4km figure of an aboriginal. It's faded into the desert quite a bit now but the shape (and size!) is still quite apparent. Wikipedia…

Here is the sports complex used for the 2004 Summer Olympics in Athens. Most of the venues were still under construction at the time of the photo, but you can still see the various sections. Starting from the west is…