This relic of transportation history still stands in this Indiana city.

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

A park and memorial dedicated to the victims of the deadliest school massacre in American history.

The last remaining tollhouse in Michigan built during the 19th-century plank road craze.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Elevated freight railway turned wildly successful urban park.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This historic streetcar system has been running since the 19th-century.

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

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.

Eat the ultimate iteration of Portugal's most beloved pastry.

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

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Sip cherry liqueur at a bar dating back to 1840.

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

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

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.