This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

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

Why have you never heard of the second most popular tourist site in New York?

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

100 massive sculptures in the Hudson River Valley.

Little Red Lighthouse under the George Washington Bridge.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

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