A hidden three-foot-wide house separates these two regal churches.

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

Ancient catacombs form the foundation for this Rococo orgy of a church.

These small, triangular, colorful houses are a staple of Madeira Island.

Crafted from ocean litter, this sculpture highlights the ills of overconsumption.

A micronation on an islet along the coast of a Portuguese island.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

A shrine-like museum entirely dedicated to soccer superstar Cristiano Ronaldo.

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

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

The devil-defying mark left by a saint as a boy is visible inside Lisbon's cathedral.

Step back in time at this 19th-century kiosk.

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

A cast iron Fiat 500 sculpture overlooks the sea at Port Lympia.

A reconstruction of a classic mansion on the island of Delos was designed for a historian and archaeologist.

The curious underground history of keeping Paris clean.

This garden houses the remains of the ancient Greek port of Marseille.

France's third-largest necropolis offers a peaceful respite from a busy port city.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

A medieval military street hidden beneath a charming French fishing village.

A memorial to honor those who were killed in a Bastille Day terror attack in Nice.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

There once was a man named Lear / Who found limericks so dear / His final resting space / Is an unusual place / Most people don’t know he’s here.