To truly appreciate Detroit's landmark skyscraper, you have to step inside.

A unique tribute to the millions of animals who served and died for the British military.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

From the Difference Engine to the Cray-1, all under one roof.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

The Andean town where every single building is decorated with a brightly colored frieze.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

10,000 flowered plants bloom in the City of Roses.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

Guatemalan womanizer, venerated during Holy Week.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.