Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A blooming house of worship for the masses.

This Roman theater was crafted into the local tuff rock and was rediscovered during the 19th-century.

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

Whitewashed mosque contains the world's largest carpet.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

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

A more chill but no less fascinating version of the famous ancient archeological site.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

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

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

This 12,000 year old Iranian cave village has been continuously inhabited for over 3,000 years.

The tower in this 1,000-year-old mud-brick village seems to vibrate for no apparent reason.

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