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

Ancient serpentine sacrifice holder that has stood the test of time.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

Artists made this mosque into a marvel of Ottoman baroque architecture.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

Large miniature theme park with 100-plus models.

Have tea in a cemetery with a dazzling view of Istanbul.

Step back in time and witness the fall of Constantinople.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

A marvel of Byzantine engineering under the streets of Istanbul.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

One of the most exquisite Lycian hilltop citadels in Turkey.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.