Taxila, Pakistan

An archaeological site of three successive cities, near Rawalpindi, Pakistan. There between the 7th cent. BC and the 7th cent. AD was a flourishing city, famous as an ancient seat of learning. It was occupied (326 BC) by Alexander the Great, became prosperous under the empire of Asoka, and was overrun (c.1st-2d cent. AD) by the Kushans. It was a center of Buddhist studies and was visited in the 7th cent. by Hsüan-tsang . There are remains of Buddhist stupas and monasteries as well as sculpture of the Gandharan school of art. Taxila was strongly influenced by the goods and ideas were carried along this route from Rome to India to China, passing through Afghanistan and Pakistan. The site played host to a succession of rulers, including Mauryan, Bactrian, Scythian, and Kushan empires.Taxila illustrates the different stages in the development of a city on the Indus that was alternately influenced by Persia, Greece and Central Asia and which, from the 5th century B.C. to the 2nd century A.D., was an important Buddhist centre of learning.

Taxila is very interesting if you are from Europe, knowing that the Greek culture is one of the major basis of our western culture.
To see the columns of a greek temple with corinthian decoration on the upper part of the columns so far away from Greece is a must.
don't worry about security , you'll be accompanied by armed policemen.

Taxila:
it was declared Unesco world heritage site in 1980