Building owners can take out tiles for free at this repository for historic building materials.

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

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

A small Portuguese cottage formed between boulders in the countryside.

This castle has links to Portugal’s founding and struggles for independence.

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

A replica of the Roman emperor in glorious full color.

This small chapel is built of human bones and decorated with a golden skeleton.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

One of the smallest bookstores on the planet.

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

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

In addition to showing films, this one-screen arthouse cinema from the late 1940s is a museum of old film equipment.

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

A brick-paved former section of the historic coast-to-coast highway.

An obelisk commemorating Lincoln's role in connecting the coasts.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

A cemetery for Slovenian notables also serves as a popular recreation space.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This Slovenian museum houses the country's largest collection of painted beehive panels.

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.