Built as a home for the Union Porcelain magnate in 1867, now the Greenpoint Reformed Church and home to a ceramic mystery.

Constructed in the 1920s, this former pencil factory is now an office building.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

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

A bit of retro transportation flair preserved in the world's largest department store.

Neoclassical bank designed by NY architects Helmle & Huberty.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The most confusing clock in New York.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The greatest real estate coup of all time.

The "Seinfeld" diner.

Visit the monolithic tomb of America's most famous general.

A Natural History and Science Emporium.

An encyclopedic collection of mammal penises.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The U.S. military dumped millions dollars worth of goods off a beach in Vanuatu, purely to spite the British and French.

"The country that ate itself."

Recently revamped museum of Fijian history located within a gorgeous colonial-era garden.

Two large posteriors in one giant statue.