America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Also known as the Osaka Garden, this garden was originally built in 1893 as part of the World's Columbian Exposition.

Honoring the star of the “The Bob Newhart Show” which took place in the city of Chicago in the 1970s.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

This urban oasis is a marvelous meld of music and landscape architecture.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

How did a 2,000-year-old Roman column find its way to a Chicago park?

In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

Hidden on the seventh floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

What happens when you cross a mayor and a painter?

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

This demon atop the Notre-Dame de Paris looks utterly bored.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.