Hidden within Sydney’s lush Royal Botanic Garden is a walled cactus rockery and the site of Australia's first zoo.

A futuristic, brutalist masterpiece that is also strangely prison-like.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

A late-19th century diversion canal built by hand crosses Bryce Canyon National Park and is still in use.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Despite sitting firmly in the global cradle of the Church of Jesus Christ of Latter-day Saints, this Hare Krishna temple is host to one of the largest color festivals outside India.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This grubby wall is said to be one of the Earth's esoteric energy centers.

Inside this Krakow church, an explosion of psychedelic color.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

This stone complex marks the urban center of a lost civilization.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

Victorian "Fancy Craft" Hair Wreaths and Relics.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

The only road through the heart of Glacier National Park.