While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

It houses the remains of a 17th-century version of the Titanic.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

Red frames showcase remnants of one of New York's original subway stations.

An annual extravaganza of Broadway theater memorabilia.

What happens here stays here – unless it affects the whole world.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Ever wanted the laymen's version of your credit card fine print?

There must be a pun in this haystack somewhere...

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

The most confusing clock in New York.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

Discover the taste of mold.

A black and white mural stands out from its psychedelic surroundings.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

This private residence was the template for one of the most beloved television homes of all time.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

The site of the deadly Triangle Shirtwaist Factory Fire.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.