The beautiful, ornate weather station is the most popular geocache in Salzburg.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

Alexander Hamilton’s creation caused quite a bit of controversy.

Historical figures from New York City's Catholic community reside in Midtown.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Rumors of the occult haunt this upscale 1920s hotel.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The world's largest public collection of PEZ memorabilia.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Washington's iconic carousel has a nice piece of Civil Rights history.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

In Houston's airport, a cow is properly equipped to jump over the moon.

This small park features a monumental fountain wall, providing a great photo opportunity in the middle of Houston.

Step into a pastel time capsule where candy is truly dandy.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The massive machine creates cracking displays of indoor lightning.