Part2: 10 greatest ancient artificial works on the planet

Angkor Wat (Cambodia): The Temple is considered the largest single religious monument in the world, with an area of over 400 square kilometers. The main temple was built from 1113 to 1150 by King Suryavarman II, dedicated to Vishnu (Hindu), the replica of Angkor Thom style of art. And today it has become a symbol of Cambodia, appearing on its national flag, and it is the country's prime attraction for visitors.  Angkor Wat is oriented to the west; scholars are divided as to the significance of this. The temple is admired for the grandeur and harmony of the architecture, its extensive bas-reliefs, and for the numerous devatas adorning its walls.  UNESCO has set up a wide-ranging program to safeguard this symbolic site and its surroundings. The modern name, Angkor Wat, means "Temple City" or "City of Temples" in Khmer

Colosseum (Italy): also known as the Flavian Amphitheatre, it is an oval amphitheater in the center of the city of Rome, Italy. Built of concrete and sand, it is the largest amphitheater ever built and is considered one of the greatest works of architecture and engineering ever. The capacity of containing when it was newly built is 50,000 spectators. Arena was used for the gladiator to perform in front of the public. Arena was built around the year 72 AD under the dynasty of Emperor Vespasian. This is the largest work which was built in the Roman Empire.

Taj Mahal (India): 171 meters in height, it is one of the most famous tourist destinations in India. The temple was built by the Emperor- Shah Jahan in memory of his third wife. According to legend, Shah Jahan has planned to build the Taj Mahal in black marble on other sides of the river, but his plans were interrupted. Using thousands of craftsmen and carvers, the Taj Mahal was completed in 1653 after 21 years of construction. Temple is a combination of many elements from the architecture of Turkey, the Ottoman, Persian, and Indian. Temple was recognized as world heritage in 1983.

Easter Island (Chile): As one of the isolated islands which are well-known for Moai statues carved by Polynesian people in the years 1250 to 1500 AD. All the statues are made from monolithic stones that are carved from a single platform. The largest Moai which has been erected is "Paro", is 10 m high and weighs 75 tons. A statue was found in the unfinished condition; it is 21 meters high and weighs 270 tons.  In 1995, UNESCO named Easter Island a World Heritage Site, with much of the island protected within Rapa Nui National Park. Parthenon (Greece): There is not any itinerary to Athens which is complete without visiting the Parthenon. This is a temple of Athena, which was built in 447 BC. It is the most famous remaining construction work of ancient Greece and was hailed as the achievement of Greek architecture. The sculptures of the decoration of the temple which are made from white marble are regarded as the pinnacle of the art of ancient Greece, and Parthenon is rated as one of the greatest cultural works of the world.