Starring: Sam Worthington as Perseus, son of Zeus; Gemma Arterton, a former Bond girl in Quantum of Solace, as Io, a woman cursed who guides Perseus in his quest; Alexa Davalos as Andromeda, the Princess; Liam_Neeson as Zeus
The movie is based on Greek mythology but it wasn't shot in Greece. The film was primarily shot at Teide National Park on the Spanish island of Tenerife, one of the Canary Islands off of the African coast. The park is the 2nd most visited national park in the world with its lava landscape. Other Canary locations include Maspalomas Dunes, Gran Canaria, and Timanfaya National Park in Lanzarote.
Photographer: wikimedia/Daniel Tenerife
The Dunes of Maspalomas are one of the most famous sights on the south coast of Canary Islands. The large sand waves are covering an area of 4 sqkm between Playa de Inglés and Maspalomas. It is a land strip of 2000 hectares with a total of 17 km of wonderful coastline with sand dunes, wide, sandy beaches, shallow waters and an excellent all- year-round climate – a paradise for beach lovers and family holidays.
Many other Clash of the Titans sequences were shot in Wales. Several scenes were filmed at the Dinorwig Slate Quarry when the group arrive on top of the giant scorpians to visit the Stygian witches.
A few scenes were shot at Newborough woods, Anglesey including the group walking through the trees and the first time Perseus sees the horse. The first part of the fight scene between Perseus and Calibos was filmed in Newborough and the rest was filmed in Tenerife.
Some aerial shots of the scorpions travelling over the mountains was filmed at Snowdonia including Castell-y-Gwynt. Snowdonia is also used as the backdrop towards the end of the film when Perseus flew over the mountains to get back to Argos.
Photographer: wikimeida/Mike Peel
Aerial shots of the Danakil Depression in Ethiopia was used as the setting for the entrance to the underworld.
Danakil Desert in Ethiopia is also featured in a few scenes. Baking temperatures, wastelands of salt, many volcanoes exist in the region. It was named by National Geographic as the "Cruelest Place on Earth". The landscape is so unusual and inhospitable, it is like on another planet.
Not sure the location of the natural arch where the massive Zeus statue was built. If you are interested in natural arches, here is a good web site: http://www.naturalarches.org/movies/index.htm.