This Week in Photos, August 5-11, 2011

People release paper lanterns onto the Motoyasu River in Hiroshima, Japan to commemorate the atomic bomb victims on the 66th anniversary of the attack. The bomb killed an estimated 70,000 people instantly.

A diver examines photographs by Austrian photographer Andreas Franke in the Florida Keys National Marine Sanctuary off Key West. Franke created and installed a dozen digitally composited images for the underwater exhibition.

Monday was National Fitness Day in China. In Haozhou, children marked the day by roller-skating in a square.

Revellers dance in front of the main stage during the 17th Woodstock Festival in Kostrzyn-upon-Odra, Poland.

A man posts a note on the boarded-up window of a discount store in London, England. Hundreds of positive messages have appeared on the board calling for peace and tolerance in the city.

Cindy Wilson of Aurora, Ohio (L) takes part in an attempt to set a new world record for the most Lucy Ricardo lookalikes assembled in one place in Jamestown, New York.

Members of Italian theatre company Tascabile di Bergamo dance a waltz on stilts during the Italian street theatre festival at Pateo do Collegio square in downtown Sao Paulo, Brazil.

Revellers in the southern Indian city of Hyderabad mark 'Friendship Day' by participating in a re-enactment of a traditional Spanish festival,"La Tomatina.' The festival involves participants throwing tomatoes at each other.

The audience watches a performance by Shattered Windscreen Theatre Company at the Minack Theatre in Porthcurno, England. The play is one of a number of week-long productions being hosted at the world-famous theatre throughout the summer.

Nepalese Indigenous women pose for a picture before attending a parade to mark the International Day of the World's Indigenous People in Kathmandu.

Members of the Meyboom brotherhood carry a Meyboom tree before the planting it in central Brussels. The Meyboom festival dates back 703 years and celebrates the 1213 victory of Brussels over the neighboring city of Leuven.

Prateep Rodpai, one of Thailand's last traditional Khon mask makers shows off one of his masks in Bangkok.

The BWF World Badminton Championships and LOCOG Test Event for London 2012 at Wembley Arena in London, England.

Saimaiti Aishan attempts to set a world height record for tightrope walking in Langshan, China. Aishan is also the first person to walk a tightrope between two hot air balloons.

Participants take part in a re-enactment of a battle between Slavs and Vikings during a festival on the Island of Wolin off the coast of Poland.