Former meatpacking facility turned vertical farm and sustainable business complex.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The final resting place of New Orleans' most famous voodoo priestess.

An old-timey wax exhibition campily depicting New Orleans legends and scandals.

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 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

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

Museum celebrating the history of computers, especially their role in codebreaking.

The largest underground church in Europe.

Nationwide network of co-ownership underground catastrophe shelters.

A font of vintage porn on the silver screen.

Bowl in splendor, if you're lucky.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A perfectly running 230-year-old silver automaton and music box.

An entire town in Haiti memorializes one man and his historic revolution.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This medieval church tower has maintained its clockworks since the 16th century.

One of the world's largest Tesla coils.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Limestone caves with spectacular showcase chambers.