A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

One of only two remaining Victorian-era greenhouses in New York.

A way to take your secrets to someone else's grave.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Every year, the colorful murals of Montreal get a complete makeover.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Elevated freight railway turned wildly successful urban park.

137 graves holding New England's earliest residents.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

This beautiful and unmissable little museum is full of fascinating artifacts from Mesoamerica's great civilizations.

A national collection of Communist-era musical posters.

A statue honors the children who fought Nazis in Poland.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

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

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.