The oldest buildings in the world
Ancient Rome was a country that was very well developed civilizationally. Evidence of this are even ancient buildings that have survived so many centuries and are used to this day. Of course not only the ancient Romans were excellent builders, because much more such old buildings survived all over the world, but most can be seen in Italy. See other oldest buildings in the world as well.
Santa Sophia, also known as Hagia Sophia. It is a mosque in Istanbul, its construction was completed in 537 AD.
The Pantheon in Rome was built as a temple by Hadrian in 117 BC. The building has been used throughout its whole history and is still in use today. It's one of the best preserved Romanesque buildings, now there's a museum and Roman Catholic church.
Church of Santa Sabina in Rome, built in 422 AD. The building is still used by the Catholic Church.
Mausoleum of Hadrian in Rome, usually called Castel Sant'Angelo, was completed in 139 A.D. and turned into a fortress around 400. Today it is used as a fortress and museum.
The Colosseum had regularly hosted fifty thousand Romans during the legendary fights of gladiators. Due to its condition, these days won't return, but the building is still used today and can accommodate several hundred people on plastic seats. The cosy cultural events held there are terribly expensive. Larger concerts and Roman-Catholic events are held outdoors as well, and the Colosseum is used as a dramatic background.
Theater of Marcellus, once the largest in Rome theater built in the open air in the last years of the Republic. The building has undergone several modifications throughout its history, and today the upper part serves as apartments.
Ponte Fabricio Rome was built in 62 B.C. The bridge has remained almost unchanged and still serves thousands of Romans.
The bridge over the Meles River in Izmir, Turkey, was built around 850 BC, which means it is already 2867 years old and it qualifies as the oldest functioning bridge in the world.
Church of the Nativity was built in 565 AD, in Bethlehem and today it's one of the oldest functioning churches in the world.
Proserpina Dam (Merida, Spain) comes from the first or second century AD. This ancient Roman gravity dam is still used by local farmers to irrigate crops.
Angkor Wat - the largest, most important and most famous temple in the Angkor complex, located in Siĕm Réab province, Cambodia. Its construction was completed in 1150 AD.
Nanchan Temple is a Buddhist temple near Doucun town at Wutaishan, in Shanxi Province, China. It was built in 782 AD and its grand hall is now the oldest surviving wooden building in China.
Basilica of Constantine in Trier, Germany is a Roman basilica that was built in the early 4th century. Today it is used as a church by the assembly of the Evangelical Church in Rhineland.
Acoma, also known as "Sky City", is a native American pueblo located west of Albuquerque, New Mexico. Acoma's tribal tradition is estimated at over 2,000 years.
Ukba Mosque in Tunisia was built in 670 AD, and it's also known as Great Mosque of Kairouan, it is one of the oldest mosques in the world.
Ancient Stonehenge is still a place of religious significance for neo-Pagan and New Age believers. It is visited by the Neodruids in particular.
The Tower of Hercules is an ancient Roman lighthouse near A Coruña, Galicia, in northwest Spain. The construction is almost 1900 years old and still in use. This way it is the oldest working lighthouse in the world.