A tourist takes photographs during a visit to the Jesuit mission of Santisima Trinidad of Parana, 37 km (23 miles) from Paraguay's border with Argentina, January 19, 2008. The mission was declared a UNESCO World Heritage Site December 11, 1993. REUTERS/Jorge Adorno (PARAGUAY) 

South Korean tourist Cristi jumps as she poses for a picture during a visit to the Jesuit mission of Santisima Trinidad of Parana in Encarnacion January 19, 2008. The mission was declared a World Heritage Site by UNESCO December 11, 1993. REUTERS/Jorge Adorno (PARAGUAY) 

Tourists pose for a photograph during a visit to the Jesuit Mission of Santisima Trinidad of Parana, 37 km (23 miles) from Paraguay's border with Argentina, January 19, 2008. The mission was declared a UNESCO World Heritage Site December 11, 1993. REUTERS/Jorge Adorno (PARAGUAY) 

A woman walks across the courtyard at the Jesuit Mission of Santisima Trinidad of Parana, 37 km (23 miles) from Paraguay's border with Argentina January 19, 2008. The Jesuit Mission was declared as a world heritage site by UNESCO in December 11, 1993. REUTERS/Jorge Adorno (PARAGUAY)