Vatican City is the world's smallest independent international state, a walled-off enclave within Rome. It's home to 842 people, the Sistine Chapel, and St Peter's Basilica.

Some of the world's most important relics -- the Sistine Chapel, for example -- are located inside the Vatican Museum. A guided tour here is worth every penny.

Located inside the Apostolic Chapel, within the residence of the Pope, Michelangelo's ceiling fresco in the Sistine Chapel is a sight to see. Also, spend time studying The Last Judgement on the altar wall.

This is where to go when you want to see Roman ruins. The Roman forum itself was once a marketplace or plaza, and is surrounded by the remnants of ancient government buildings.

Tour this famous amphitheater and reflect on the incredible architecture from 72 AD. The Colosseum is more impressive than any football stadium you've ever seen, AND it's 2000 years old.

It's thought that Palatine Hill is where Rome began. Excavations show that people have lived there since 1000 BC, and the ruins are steeped in mythology.

This tourist attraction is also the center of the Catholic world. The stunning St Peter's Basilica was built on the site where Peter, the apostle and first pope, was buried.

Raphael's 16th century frescoes line the walls of the Palace of the Vatican's four public reception rooms, also called Raphael Rooms.

Known to be one of the best museums in Rome, the Galleria Borghese is a 17th century villa is located in the sprawling Borghese park. You'll see antiquities, Renaissance art, and early Baroque pieces.

Rome's world-famous Trevi Fountain depicts the mythological Neptune, backed by two Tritons. A fun place to grab a gelato, throw a coin in the fountain, and people-watch.