Cryptic messages embedded in the New York City sidewalk.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Plot your trip through the city on the sidewalk.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The South's nickname was supposedly born at a former bank in New Orleans' French Quarter.

An abandoned underground bunker not far from downtown New Orleans.

An otherworldly musical haven in The Big Easy.

Site of a former hidden treehouse in New Orleans.

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

While these wooden totems bear a striking resemblance to First Nations artwork of British Columbia, their actual origins lay on the opposite side of the Pacific Ocean.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

One of the best collections of wax anatomical models in the world.

This museum promotes informed contraception by documenting its often secret past.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Handsomely crafted representations of our round planet.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

The most accurate timepiece in the world.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A nostalgic bibliographic gem.