Ancient Ruins

The so-called Etruscan Pyramid is a megalithic rock-cut monument, located in the Tacchiolo valley near the city of Viterbo, Italy.

On the small island of Isla del Caño and the Diquís Delta in Costa Rica are over 300 stone Petrospheres often referred to as the Diquís Spheres, that have been attributed to the now extinct Diquís culture.

Siq al-Barid, also called ‘Little Petra’ is a Nabataean site in the Ma'an Governorate of Jordan that features rock cut tombs, stone-built architecture, and a complex system of hydrological engineering.

The Hierapolis Ploutonion is a sacred sanctuary in the ancient Greco-Roman-Byzantine city of Hierapolis, located in classical Phrygia in the present-day province of Denizli, Turkey.

Uplistsikhe, meaning "the lord's fortress" is an ancient rock-hewn city located in the Shida Kartli region of present-day Georgia.

Claros was an ancient Greek sanctuary located near the present-day town of Ahmetbeyli in the Menderes district of Izmir Province, Turkey.

Hatra was the ancient capital of the small Kingdom of Hatra, located in the present-day eastern Nineveh Governorate in northern Iraq.

Por-Bazhyn, meaning "Clay House" in the Tuvan language are the remains of an adobe monastery or a fortified palace, that was built on a small island in Lake Tere-Khol, located in the Sengelen mountains of southern Siberia, Russia.

Sarmizegetusa Regia was the capital and political centre of the Dacians, located in the Orăştie Mountains of the Grădiștea Muncelului Natural Park, in present-day Romania.

The Moundville Archaeological Site is an ancient tribal centre of the Mississippian culture, that built a large settlement comprising of raised mounds in the present-day state of Alabama near the banks of the Black Warrior River, in the United States.

The Etowah Mounds is an ancient tribal centre of the South Appalachian Mississippian culture, that built a large settlement comprising of raised mounds located on the shore of the Etowah River, in the present Bartow County, Georgia, of the United States.

The Kincaid Mounds is an ancient tribal centre of the Mississippian culture that built a large settlement comprising of raised mounds, in the present-day state of Illinois near the banks of the Ohio River, in the United States.