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

Portugal's National Pantheon has a history of curses, collapses and financial problems.

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

This now abandoned restaurant provides some of the most amazing views of Lisboa.

One of the smallest bookstores on the planet.

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

A garden in Lisbon filled with giant porcelain creatures.

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

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

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

A Japanese video game arcade hides in the back of a Swedish pool hall.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Sweden's "good old days" painstakingly re-created in a model village.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

This legendary dessert was served to Nobel laureates for decades.

Maybe the only restaurant in the world where your seat will be signed by a Nobel laureate.

Located in an old church, this brewery produces a different kind of holy water.

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.