The fairy tale castle of the "fairy-tale king."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The national park was once a plantation estate.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The site of the climactic scene from the classic horror film is now a historic landmark.

This historic mini-suspension bridge was swept away once but is now here to stay.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Birthplace of America's first documented serial killer.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Beautiful natural falls where Satan once ruined a pot of beans.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Even Henry David Thoreau found this glacial pothole irresistible.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

The world’s largest underground marble quarry is hiding in Vermont.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

The highest peak in the state of Vermont has some interesting features.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

One car at a time please.

The quaint little Vermont town played a quaint little Connecticut town in Tim Burton's "Beetlejuice."

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.