Elevated freight railway turned wildly successful urban park.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Berlin's old airport.

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

Celebrating the transformation of trash into objects of beauty.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Burping, gurgling geothermal mud pots by the Salton Sea.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

Beer lover's can-covered house.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Hidden beneath the streets of London is a secret subway that only carried mail.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

This massive redwood tree has a hole in the base big enough to drive through.

A museum celebrating the Victorian obsession with hair art.

Home to the deepest rift anywhere on Earth.

A smoke stack so large, the Washington Monument could fit inside!