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A reveler from the Portuguese village of Aveiro playfully chases a tourist during the Iberian Mask parade in Lisbon May 12, 2012. Traditional masks from northern Portugal and Spain were presented during the parade.

Iberian masks parading through Lisbon | by Julie Dawn Fox VII International Iberian Mask Festival 10 to 13 May 2012 in Lisbon, Portugal

An airship of "The New7Wonders of the World" travels over Iguazu waterfalls in Foz do Iguacu May 26, 2012. The Iguazu Falls was announced as one of the New7Wonders of Nature by the New7Wonders of the World foundation last November. It received a bronze plaque on May 25, 2012 during an official inauguration ceremony. Email

Joanne Gregory carries the London 2012 Olympic torch on a hand-drawn boat across the Pontcysyllte Aqueduct in North Wales.

Britain's Queen Elizabeth's barge travels along the River Thames to celebrate her Diamond Jubilee in London June 3, 2012. Britain's Queen Elizabeth led an armada of 1,000 boats in a gilded royal barge down London's River Thames in a spectacular highlight of four days of nationwide celebrations to mark her 60th year on the throne.

Carnival Mask,Valencia, Spain. Painted papier mache, & hemp. Valencia is famous for Las Fallas, the big spring festival where many participants wear masks in which to celebrate. The end of festivities is a pyromaniac’s dream where most of the masks, figures and other decorations are burned. This very sturdy, handmade mask escaped the bonfires. Perhaps the blue facepaint is a reference to the peninsula’s barbaric past.

Visitors stand on a platform beside the Rhine Falls in the town of Neuhausen south of Schaffhausen June 13, 2012. The Rhine Falls are the largest falls in Europe, with an average flow of 700 cubic metres per second (25,000 cubic ft/sec) the water cascades down the cataracts, which are 150 metres (450 ft) wide and 23 metres (75 ft) high.

Tourists take pictures beside a Swiss national flag at the Jungfraujoch (3,572 metres/11,782 ft) in front of the peak Mount Jungfrau (4,158 metres/13,642 ft) during sunny spring weather near the Swiss mountain resort of Grindelwald in the Bernese Alps.

The Mari Lwyd or, in Welsh, Y Fari Lwyd, is a New Year custom once prevalent in the valleys of South Wales. Translated, the name means ‘the Grey (or Holy) Mary’ although this is likely a more recent rendering of ‘the Grey Mare’, as the tradition surrounding the Mari Lwyd involves the parading of a horse’s skull.