Underground structures hold a distinct appeal. Whether shaped by natural forces or built by human hands, they continue to fascinate visitors. This is true even for those uneasy about confined or subterranean spaces.
In the case of man-made sites, the determination to complete complex architectural projects underground is commendable. They are places of survival, worship, and defense. They are ancient cisterns, hidden water channels, sacred temples, crypts, and entire cities carved into rock.
Nature, too, has formed extraordinary underground landscapes. Together, these spaces reveal a blend of ingenuity and wonder. In this gallery, we discuss 15 remarkable ancient underground structures and places that offer both beauty and historical intrigue. Curious? Click to know more.