Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Profile of a sleeping person 4km long in 250m high cliffs.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

340-foot statue built to honour the Heroes of the Soviet Union.