On May 6, 1889, the Eiffel Tower was opened to the public. Serving as the entry gate to the World's Fair, the Eiffel Tower was the tallest man-made structure in the world for the next 41 years. With around 7…

On May 5, 1821, Napoleon died on Saint Helena. Following his defeat in the Battle of Waterloo six years earlier, the British had imprisoned Napoleon on this South Atlantic island. As he still believed he was an emperor he complained…

On May 2, 1568, Mary Queen of Scots escaped from Loch Leven Castle. After having been imprisoned on this isolated island for close to a year, and having been forced to abdicate the throne, Mary escaped but promptly lost a…

On May 1, 1931, the Empire State Building was dedicated. The 103-storey skyscraper was the tallest building in the world - a record it held for almost 40 years. President Herbert Hoover turned on the building's lights with the push…

We've visited a few solar power generation facilities in the past, but here is a roundup of solar power towers - elevated structures surrounded by movable mirrors called heliostats. The mirrors concentrate solar energy onto receptors in the tower where…

The latest frontier for Google's Street View technology is underwater. Cameras have visited quite a number of popular diving and snorkelling locations, giving us spectacular imagery of sea life and coral reefs. Today we're taking a tour of these locations,…