Playing Tourist

Actors Woody Harrelson, left, and Owen Wilson pose for photographers during a visit to the Andean City of Cuzco, Peru, Thursday, Dec. 6, 2007. They are the latest celebrities to visit the region, rich in archeological ruins, this year. Actresses Cameron Diaz, Olivia Newton-John and Microsoft Corp. founder Bill Gates meandered through Cuzco's centuries' old cobblestone streets earlier this year.

Actor Owen Wilson enters a tent during a visit to the Andean City of Cuzco, Peru, Thursday, Dec. 6, 2007. Wilson and actor Woody Harrelson are the latest celebrities to visit the region, rich in archeological ruins, this year.

Actor Owen Wilson, left, walks with a police officer as he visits the Andean city of Cuzco in Peru, Thursday, Dec. 6, 2007.

Actress Cameron Diaz, left, gestures while taking pictures alongside other tourists at the Inca ruins of Machu Picchu, Peru, Friday, June 22, 2007. After a "Shrek the Third" publicity tour that took her to London and Taiwan, Diaz journeyed to a real kingdom of Far Far Away - the ancient Incan capital of Cuzco in the Peruvian Andes.

Actress Cameron Diaz, right, stands with MTV Canada host Sol Guy as they tour the jungle-shrouded Inca citadel of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007.

Actress Cameron Diaz, right, and MTV Canada host Sol Guy, center back, look on as their guide Freddy Quispe points at the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007.

Actress Cameron Diaz, center, and Sol Guy, a MTV Canada host, left, walk with guide Freddy Quispe as they tour the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007. The actress, who voices Princess Fiona in "Shrek the Third," arrived in Peru on June 19 with a group of nine people for a week-long visit.

Actress Cameron Diaz kneels down between Sol Guy, an MTV Canada host, center, and a tour guide, left, as she looks at the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007. Her trip follows a whirlwind publicity tour for "Shrek the Third" that took her globe-trotting.

Actress Cameron Diaz, right, greets photographers as she walks with Sol Guy, an MTV Canada Host, as they tour the Inca ruins of Machu Picchu, behind, near Cuzco, Peru, Friday, June 22, 2007.

Actress Cameron Diaz, right, and MTV Canada host Sol Guy laugh as photographers take their picture while they tour the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007.

Actress Cameron Diaz, second from left, stands with Sol Guy, an MTV Canada host, as they tour the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007. The ruins are on the shortlist as one of the New Seven Wonders of the World.

Actress Cameron Diaz, right, and Sol Guy, left, an MTV Canada host, tour the Inca ruins of Machu Picchu near Cuzco, Peru, Friday, June 22, 2007. Machu Picchu, often referred to as the "Lost City of the Incas," was constructed around 1450 A.D., at the height of the Inca empire, and was abandoned less than 100 years later, as the empire collapsed under Spanish conquest.

Chairman of Microsoft Corporation Bill Gates walks in front the Monasterio Hotel in Cuzco, Peru, Saturday, June 23, 2007. Gates is in Cusco to attend the traditional Inti Raymi ceremony, held every June 24.

Chairman of Microsoft Corporation Bill Gates, center, his wife Melinda Gates, right, and an unidentified friend attend the traditional Inti Raymi ceremony in Cuzco, Peru, Sunday, June 24, 2007.

Chairman of Microsoft Corporation Bill Gates holds a cup of coca tea as he watches the traditional Inti Raymi ceremony in Cuzco, Peru, Sunday, June 24, 2007.

Oscar-winning actor Adrien Brody rests with his girlfriend, Spanish actress Elsa Pataky at a resort in Mancora, northern Peru, Thursday, June 21, 2007.

CBS News 24/7