A Beaux-Arts triumph set to become Ford's innovation campus

Mosques carved from coral and dozens of well-preserved stone structures fill this 500-year-old Swahili trading center.

The oldest covered railroad bridge still standing in the United States.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

This bridge over the River Cuale leads to a neighborhood that was once an escape for Hollywood's elite.

A lavender labyrinth so large it’s visible on Google Earth.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.

Enjoy the waters of this half-moon-shaped natural pool surrounded by breathtaking scenery.

This whimsical stacked cabin looks like something out of a children's book.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

One of the longest footbridges in Europe.

Inside the simple black-and-white exterior of Église Sainte-Cécile hides a pastel wonderland.

A line number in Amsterdam that will likely never be used again due to its tragic history.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Amsterdam's Red Light District leaves little to the imagination.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

Amsterdam's former hotspot for public executions and dissections.

The attic of a four-century-old canal house hides a clandestine church.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Europe's official "zero-level," the equator of elevation.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.