It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

A marvel of Byzantine engineering under the streets of Istanbul.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

This subterranean studio is filled with fascinating kinetic art.

A floating cat sanctuary on an Amsterdam canal.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

The monument is inscribed, "To Sagamore John and those Mystic Indians Whose Bones Lie Here”.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of Paul Revere's historic two lantern warning.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.