Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A staggering collection of photographs depicting medical, social, and historical change.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

Once America's longest-manned military fort, now an abandoned hulk.

Volunteer-run library dedicated to exploring five decades of activism history.

The oldest living tree in Manhattan comes shrouded in sinister legend.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

The famous author's cottage hideaway.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Unlock the secrets of the conjuring arts.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Unique antiquarian shop specializing in globes, maps, and prints.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.