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

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

The world's oldest bookshop still in operation.

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

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

One of the few places in Portugal where the Celtic ritual of wearing large wooden masks is still practiced.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

The stunning interior of this Gothic church is covered in ornate gold details.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

Narrow-gauge railway with its own personal power grid.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Where beer lovers can literally immerse themselves in beer.

Be(w)ar(e) the moat around this historic Czech castle.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

A spiral staircase twists to the top of this unusual Czech lookout tower.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

This former quarry is now a picturesque gorge that hides a sunken lake.

Bohemian paradise covered in majestic forests.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.