The longest enclosed pedestrian bridge in the world spans 14 lanes of traffic and six rail tracks, all while lighting up the night sky.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

The best place in the world to buy tinned fish.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

One man's remarkable private collection of art from around the world.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

One of the smallest bookstores on the planet.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This charming candle shop has been in business since 1789.

This man-made mound monument was built out of soil from all across the Polish empire.

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

Real bones which are said to have belonged to a Polish dragon.

The world's largest collection of witchcraft regalia.

The abandoned fishing village was swept right into the sea.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.