A posh members-only club with a literally dramatic history.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The oldest Jewish cemetery in Southeast Asia is a monument to a disappearing community.

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

Singapore's landscaping project is home to 18 incredible Supertrees.

This landmark building is now a vibrant performing arts space with musical acts from around the world.

The final resting place of the great navigator, or maybe his brother.

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

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

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

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

This historic hotel invented the chocolate brownie.

This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Detailed facade of a brownstone in Boerum Hill.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

Eighty million natural history specimens call this gargantuan museum home.

Rebuilt remains of a temple to Roman god Mithras.