For as long as Western history, people have made an effort to Travel to Rome at least once in their lifetime. In the earliest days it was because Rome was the capital of the Roman Empire. Although the empire eventually fell, Rome never lost its cachet.
Eventually Rome became part of the Holy Roman Empire and finally it became associated with the Renaissance - the great romantic age. Certainly it is probably one of the most-visited cities in Europe, and still attracts hundreds of thousands of travellers from all across the world.
There are certain great attractions of Rome that never pall. These include the Coliseum and the Spanish Steps. Many Roman Catholics travel to Rome to visit the Vatican City. This is theoretically an independent state, as small as it is, yet it is integral to Rome as it is bound by the city on all sides.
Other than that, people come to see the Roman ruins and to experience the tremendous Roman cuisine. The scent of tomatoes and basil roasting in pans in trattorias is one of the abiding memories of visitors to the city. They love to walk the streets and cogitate on the seven hills on which the city was supposedly built thousands of years ago.
If you travel to Rome in the summer, be warned that the city is extremely hot, nearly tropical in fact. When you land at Leonardo da Vinci Airport in mid summer you will be astonished to find the perspiration pouring off you even if it is midnight. Take along light clothes if you visit Rome in summer.

Travel to Westbourne: Find many reviews on Travel and accommodation.