A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

The once highest point in China blends symbolic design with a kick of adrenaline.

This ancient Chinese observatory still contains early astronomy technology.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

European castle ruins in an American state park are actually the product of death and grief.

Elaborate tile work in this railway station tells the story of Portugal.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

The world's largest talking cow would like to tell you about the benefits of 100% Wisconsin dairy products, if only she still could.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This Seattle curio shop collects and sells haunted items in order to spread wonder one grim artifact at a time.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

Once the private home of China’s most legendary tycoon, getting inside this stunning mansion no longer requires an elite pedigree or acts of daring.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This historic hotel invented the chocolate brownie.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A tall karst islet popularized by 007.