In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

Modern-day cave dwellers carve elaborate homes out of volcanic debris.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

Slum Settlement Filled With Mountains of Garbage.

Ancient Egyptian relief, claimed to depict an electrical light.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

The largest known Ancient Egyptian obelisk.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

An alien landscape of chalk-rock in the Egyptian desert.

Ozymandias’ time-keeping temple.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

Ottoman-era houses lovingly preserved.

A Turkish monastery tucked into a cliff wall.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Long before air conditioning, Persian architects found an ingenious way to cool off.

The fire inside this temple has burned for more than 1,500 years.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.