Hiroshima survivor on Riverside Drive.

A Gothic-style abode built to accommodate the church's three resident peacocks.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

This was one of the first (and last) university-built and operated nuclear reactors.

A tiny monument to the classic American candy.

America's "second most important bell" is a contentious spoil of the Civil War.

A steampunk wonderland that preserves America's history of industrial innovation.

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

Turns out you can see the world without ever leaving Maine.

No one really knows how these old hobby horses got here, but the herd keeps growing.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Try not to get slimed in Tribeca.

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

A terrific purveyor of natural history objects and curios.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Friction between grains of sand cause a curious "singing" sound.

This small-town Connecticut restaurant gives each diner a free book from its vast library.