10. The King's Grave, Sweden
Constructed during the Nordic Bronze Age, this is an "unusually grand" double burial tomb from about 3,000 years ago.
9. Naveta des Tudons, Spain
Built 3,200 years ago and discovered in 1975, this tomb contains at least one hundred men and their prized possessions, like bronze bracelets and ceramic buttons.
8. Treasury of Atreus, Greece
This tomb was constructed during the Bronze Age, over 3,250 years ago. For over a thousand years it contained the tallest and widest dome in the world, until the completion of the Pantheon.
7. Caral, Peru
A large ancient settlement in Peru, currently the oldest known city in the Americas, constructed in over 4,600 years ago.
6. Pyramid of Djoser, Egypt
Built to contain Pharaoh Djoser after his death almost 4,700 years ago, the complex is the oldest stone-cut construction in the world.
5. Hulbjerg Jættestue, Denmark
Built 5,000 years ago, when this burial was discovered, there were forty individuals inside, one of which showed some of the earliest examples of dentistry work.
4. Newgrange, Ireland
A prehistoric monument and the oldest building in Ireland, built circa 5,100 years ago.
3. Monte d'Accoddi, Italy
Built somewhere in-between 5,200-4,800 years ago, this remarkably preserved building was either a temple or an altar.
2. Knap of Howar, Scotland
Originally part of a farmstead, this is the oldest stone house in Europe, standing since 3,500-3,100BC, or up to 5,500 years ago.
1. Megalithic Temples of Malta
These free-standing structures were all used as religious temples, and are the oldest of their kind in the world, constructed between 3,500-2,500BC, also over 5,500 years ago.
