A section of the long chain that blocked enemy ships from entering Constantinople.

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

The ornate miniature mansions were built for Istanbul's feathered residents.

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

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

One of downtown Berlin's last reminders of its Communist past.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The "Prussian Versailles" that is as glorious today as when it was built.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

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

A 13,000-year-old mastodon skeleton was found during the construction of a 19th-century New York mill.

Why have you never heard of the second most popular tourist site in New York?

This sprawling taxidermy collection celebrates the art and history of sport hunting.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

Constructed from the ruins of a former glass factory, this park incorporates the old with the new.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Marine fossils from the Devonian period are exposed at this park.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

This abandoned cemetery has a dark past of bodies buried over bodies.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.