The historic center of Rome is an open-air museum that’s home to some of the world’s most beautiful sights. Chief among them are the Colosseum, Pantheon, and Roman Forum.

According to mythology, Rome was founded by Romulus and Remus in 750 B.C. Rome was later the capital of the Roman Empire until its collapse in the 5th century A.D.

Italy is home to more UNESCO World Heritage Sites than any other country – 58. And of those, the historic centre of Rome has to be the standout.

On one single site, bounded by the city’s 17th-century walls, you have: the Colosseum, the Forums, the Pantheon, Trajan’s Column, the Mausoleum of Hadrian, the Column of Marcus Aurelius and untold other treasures.

Non-classical highlights include religious and public buildings belonging to the Vatican, such as the Basilica of Saint Paul Outside the Walls, located – correct – outside the walls and built over the tomb of St Paul.

The Colosseum, or ‘Colosseo’ in Italian, was once the largest amphitheatre in the Roman Empire. It was built in the 1st century AD by the Emperor Vespasian as a place for the people of Rome to enjoy. Originally named the Flavian Amphitheatre after Vespasian’s family name, the man who brought the Roman Empire back from the brink would not live to see its completion.

The construction of the Colosseum was very much a symbolic gesture to create a clear distinction between Vespasian and his predecessor, Nero. Nero had committed suicide after suffering military coups, partially a result of his extravagance, which included building the opulent Golden House and a vast statue of himself. By contrast, Vespasian was building the Colosseum for the citizens of Rome. As if to emphasise this point, the Colosseum was built in the former gardens of Nero’s palace over the site where Nero’s colossal statue had stood.

Completed in 80 AD, the Colosseum was opened with great fanfare by Titus, Vespasian’s son and successor. He marked the opening of the Colosseum with one hundred days of games, including stunning battle recreations on artificial lakes of water. The fact that the Colosseum was completed by this date was particularly impressive considering the building’s incredible complexity, vast size and the fact that Vespasian only came to power in 69 AD.

Even despite the short timescale of the build, the result was spectacular. Not only was the Colosseum able to take up to 50,000 spectators, it was also perfectly symmetrical, ornately decorated in marble and stone and an incredible feat of engineering.

The Colosseum remained the amphitheatre of Rome until the end of the Roman Empire. This was the place where gladiators, lions and those accused of crimes were put to the test, often fighting to the death.

Since the fall of the Roman Empire, the Colosseum has suffered from various destructive forces, including extensive pillaging of its stone and marble as well as natural disasters such as earthquakes. In fact, its materials contributed to many famous Roman buildings such as St Peter’s Cathedral and the Palazzo Venezia. Yet, even though a third of the Colosseum has been lost over time, this magnificent structure remains one of the most fascinating and beautiful historic sites in the world.

ACROPOLIS - ATHENS, ANCIENT GREEKS, PARTHENON, TEMPLE ATHENA NIKE

ANGKOR WAT - HINDU BUDDHIST TEMPLE RELIGIOUS COMPLEX, CAMBODIA

CHICHEN ITZA - ANCIENT MAYAN CITY, YUCATAN PENINSULA, MEXICO

COLOSSEUM - ROMAN HISTORIC CITY CENTRE, ROME, PANTHEON, ITALY

EASTER ISLAND - RAPA NUI, POLYNESIAN HEAD STATUES, PACIFIC OCEAN

GREAT WALL OF CHINA - 3RD CENTURY BC EMPEROR QIN SHI HUANG & MING DYNASTY

MACHU PICCHU - PYRAMID, PERU, INCAN LOST CITY, ANDES

PETRA - TREASURY, AL-KHAZNEH, SIQ GORGE, NABATAEANS, SOUTHERN JORDAN

PYRAMIDS - GREAT SPHINX, MEMPHIS NECROPOLIS, GIZA, EGYPT

TAJ MAHAL - MAUSOLEUM BUILT BY SHAH JAHAN, AGRA, INDIA

VATICAN CITY - THE WORLD'S SMALLEST, HOLIEST CHRISTIAN STATE

WESTMINSTER ABBEY - HOUSES OF PARLIAMENT, LONDON, ENGLAND

TENTATIVE LISTINGS

PORT ROYAL - JAMAICAN SUNKEN CITY 1692, PIRATES HISTORY