The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

Designed as a reminder of one of the darkest moments in Austrian history.

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

Legends surround an ancient tree trunk riddled with nails for good luck.

Op-art architecture designed for happiness.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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

The beautiful baroque library of the Hapsburg empire.

There has been an astronomical clock on this spot since the 14th century.

A Perpetually Under construction Park.

One of the coolest murals in Minneapolis.

An unusual library of dead things at the Rhode Island School of Design.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

Funhouse of found art and participatory sculpture.

Each year, one talented artist puts on a show sculpting twelve butter-based busts of dairy princesses.

A piece of solitude and tranquility in the heart of East Saint Paul.

Thousands of people walk over this fantastic work of art every day, but how many notice it?

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

These curious caverns have been home to mushrooms, gangsters, and disco.

A fence constructed completely of skis on Monroe Street.

Direct, creative challenge to Mother Nature's winter wrath.

One of two giant blue cockerel statues erected with an intentional double meaning.