1. The Pyramids of Egypt:
These are royal tombs built more than 4000 years ago for the Egyptian Pharaohs and house their mummified bodies surrounded by their treasures and personal belongings. They are about 70 in number and represent 1200 years of ancient Egyptian history that flourished around the lower Nile (near Cairo).
2. The Colossus of Rhodes It was a bronze statue of the Greek Sungod, Helios (Apollo) in the port city of Rhodes along the eastern part of the Mediterranean Sea. It was sculpted around 325 BC-292 BC by Charles of Lindus. It was destroyed during an earthquake in 224 BC.
3. The Hanging Gardens of Babylon They were built in the 6th century BC by Nebuchadnezzar II near the Euphrates river (south of modern Baghdad, Iraq). The gardens consisted of a series of terraces at about 23-91 m (75-300 feet) above the ground level and water was piped down from the reservoir at the top of the terraces.
4. The Mausoleum at Halicamassus Also known as the Tomb of Mausolus (the King of Caria in Asia Minor-325 BC) at Halicamassus on the eastern side of Aegean Sea in Turkey.
5. The Pharos of Alexandria It was world's first known lighthouse, built in 270 BC on the island of Pharos at the entrance of the port of Alexandria (chief port of Egypt on the Nile Delta). It was destroyed by an earthquake in the 13 th century.
6 The Statue of Zeus (Jupiter) at Olympia It was located in the valley of Olympia, in the southern peninsula of Greece and was made of wood; sometime in 5th century BC
7 The Temple of Artemis (Diana) at Ephesus (Rome) It was situated in Asia Minor at Ephesus, an ancient but now vanished city, built some time in 5th century BC. It was destroyed by invades hordes in 262 A.D.

The above list has been changed. The latest updates are listed below

Wonder……………...Location
Taj Mahal …………..Agra, India
Chichen Itza………...Yucatán, Mexico
Christ the Redeemer ..Rio de Janeiro, Brazil
Colosseum ………….Rome, Italy
Great Wall of China ..China
Machu Picchu Cuzco.. Perú
Petra …………………Jordan