The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

A working metal shop and venue for outrageous art and music shows in a former cannonball factory.

Walk into the 19th century without leaving Brooklyn.

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

Ride the subways of yesteryear.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

The first and only carousel with a lineup entirely of insects.

A second generation sun-powered marvel lights up the night.

Drink a Guinness under the wings of Reagan's retired Air Force One in his presidential library.

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

San Diego's most historic and haunted home.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

These locks on North America’s oldest canal are named after a porcine rock formation.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

A contemporary fresco movement illustrates the region's rich history.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

It's just another skyscraper, but it's shaped like '90s cell phone.

Pivotal home of Nobel Prize winner Pablo Neruda.

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.