Whether they're sites of worship, popular tourist attractions or luxury apartments, there are plenty of historic landmarks still flourishing today. Read on to see the world's oldest man-made ...

If they came close enough, aliens would have no trouble detecting the presence of humans on the Earth's surface. Indeed, many man-made structures, such as dams, canals, bridges, mines, highways, ...

Discover the oldest man-made structures across the world that are still open for business today. Whether they're sites of worship, popular tourist attractions, or luxury apartments, there are plenty ...