Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

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

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

A vaudeville performer mounted this hollowed-out redwood log onto the chassis of a truck, and toured the country spreading a message of conservation.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The first museum in Europe dedicated to the art of origami.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Folk art crafted from discarded vegetable crates.

Inside this museum, the history of the Walt Disney Family empire is on full display.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

One of the holiest places in the region, devotees come to Tirta Empul to bathe in the holy spring water.

Hindu temple of the dead home to hundreds of long-tailed macaques.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

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

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A former hardware store near Yerba Buena is the official home of California's history.