Structures

This is the infamous Berkeley Pit in Butte, Montana. This enormous open-pit copper mine was opened in 1955, and when it was closed in 1982, groundwater began to leak into the basin - disastrously passing through the metal deposits in…

Back in the 1850s, Britain was worried that France would try and invade, so Lord Palmerston (the Prime Minister of the time) decided to build the Palmerston Forts to defend Portsmouth's dockland, four of which were built out at sea.…

Just after yesterday's announcement of New Google Earth version 4 betas the team have sneaked out another, as yet unannounced, imagery update. Although it's not clear where has or hasn't been updated it is already clear that this is the…

The KT Palmer Sundial is the largest in North America, described well at The Big Waste of Space. As sundials were primarily designed for telling the time it should be easy to find out when this satellite photograph was taken.…

Nearby to the previously posted Machu Picchu, Peru, is a very unusual archaeological site - the strangely beautiful Inca ruins of Moray. The concentric rings clearly visible were farming terraces with a sophisticated irrigation system, constructed inside enormous natural depressions…

After the North Sea flood of 1953 destroyed 4,500 buildings, drowned 10,000 animals and killed 1,835 people, the Netherlands began work on the world's largest flood protection project, Delta Works (Dutch: Deltawerken). Today Delta Works consists of over 16,500 kilometres…