A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

The world-record holder for the longest bridge stretching continuously over water.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

"We Seceded Where Others Failed."

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

Island where motor vehicles are banned -- home to the only carless highway in the United States.

One of the largest underground systems runs under Canada's largest urban center.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A building so large that it has its own weather.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The only arched bridge made of stone on the entire Mississippi River.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Portlandia is the second-largest copper repoussé statue in the United States.

This stunning concert hall has become a symbol of Iceland's national recovery.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

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

The final resting place of soldiers' loyal canine companions.

This private residence was the template for one of the most beloved television homes of all time.

One of only two commuter aerial tramways in the United States.

A six-ton wedding present for the King of the Scots.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."