New York City's smallest piece of private property.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

The first museum in the United States dedicated entirely to posters.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

Millions of numbers carved in glass represent the tattoos forced upon victims.

A watercolor recreation of a famous fresco unearthed at Pompeii.

These gardens recreate unique and endangered Michigan habitats.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

The site of the last royal wedding in Korea.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

The supreme shrine of the state.

Two thirds of this Montreal neon icon has survived to flash another day.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.