Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

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

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.

Commemorating the spot where the famous scientist fed his pigeons.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

A celebration of capitalism in Midtown.

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

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

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

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

One of corporate America's best-kept secrets is also one of the most publicly displayed.

An underground magnet for ever-changing street art.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

To find the final resting place of a golf legend, just look for the grave covered in golf balls.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

This extraordinary model train layout covers over 1,700 square feet, with multiple trains running simultaneously.

The trials and tribulations of marking Poe's grave.

Yo, Adrian!