These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The "dragon babies" of southeastern Europe.

A miniature train-ride through Slovenia's largest cave system.

Bridge that died in war and was resurected.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

A war-torn Olympic relic is being overtaken by graffiti and nature.

The place where World War I began.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

This historic cemetery was inaccessible for several years due to dozens of land mines.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Gargoyle head that brings good luck.

Oriental bazaar in the heart of Sarajevo.

A whimsical bridge adorned with decorative dragons.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Where the lovelorn find a home for their sentimental keepsakes.

A musical instrument played by the sea.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Sports history, made in the Arroyo Seco.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.