This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

No one knows the origin of this creepy little stone man with an oversized phallus.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

According to the local legend, these boys and ducks were turned to stone by an angered water goblin.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A series of bronze circus performers spread throughout a Slovakian shopping center.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

The memorial stands at the intersection of the rivers Morava and Danube.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

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

Dedicated to a synagogue that was destroyed after having survived World War II.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.