A lonely memorial to the Challenger Space Shuttle, honoring the astronauts who died in 1986.

Inside this community-run museum, visitors are treated to the history of toys and games.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

Cryptid lake monster honored with its own monument.

The place where the great marine explorer first learned to work underwater is not where you'd expect.

Small rustic cabin nested in the mountains of Killington, VT.

Once a resting spot for King Fernando VII.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

Abandoned railway line circling the city of Paris.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

A space-age 1950s pavilion on a secluded path is full of Toronto history surprises.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

This urban oasis is a marvelous meld of music and landscape architecture.

This immense scene of a cosmic battle between a jaguar and serpent illustrates the Aztec concept of the duality of life.

A "time traveler's" vision of human history stretches throughout Mexico City's Copilco metro station.

This covert museum showcases booties worn by a rescue dog and slippers owned by Queen Elizabeth II.

Mexico City's residents are being watched by this state surveillance headquarters, designed by architects with a flair for intimidation.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

These unusual paintings give thanks to the saints and deities who granted people favors and miracles.

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.