UNESCO world heritage sites

21 photos of the Sydney Opera House, the most famous landmark of the city

28 photos of Salzburg, one of the major tourist attractions in Austria.

31 photos of downtown Vienna, the area stretching from the Parliament to the Prater amusement park and comprising the Hofburg complex.

21 photos of Schoenbrunn castle in Vienna, which was built between 17th and 19th centuries.

5 aerial views of Angkor Wat and the surrounding plains

9 photos of the Baphuon temple, built in a pyramid shape representing the mythical Mt Meru

42 photos of the Bayon, an Angkor temple famous for its 54 towers with smiling faces of Avalokiteshvara

3 photos of the southern gate of the fortified city of Angkor Thom

2 photos of Prasat Suor Prat, a set of 12 laterite towers built to the north of the Bayon

6 photos of the Phimeanakas temple, a Hindu temple built at the end of the 10th century in a pyramidal shape

6 photos of the terrace of elephants, a 350m long platform used for viewing public ceremonies in Angkor

29 photos of Angkor Wat, the largest, most breathtaking and best preserved monument of Angkor

6 Banteay Kdei is a 12th century Buddhist temple surrounded by the jungle

9 photos of Banteay Samré, a richlydecorated Hindu temple in the Angkor Wat style

23 photos of Banteay Srei, a beautiful richly decorated late 10th century Hindu temple

13 photos of Beng Mealea, one of the outer temples lying 40km to the east of the Bayon