A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

A hollow cement depiction of time's inexorable effect on the human body.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Originally built in the 15th century, this well gave the surrounding area its name.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

Take afternoon tea in a 17th-century almshouse.

Though this bridge was originally built in the 12th century, only one of its 10 arches dates back that far.

This Texas home and garden was the masterpiece of a British portrait painter.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

A few times a day, you can see an animatronic cowboy shoot-out.

A tribute to the successful role of the Keflavik Naval Air Station in the defense of Iceland, United States and NATO Alliance.

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

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

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

The busy transport hub is home to the tallest airport slide in the world.

Watch butterflies take flight before you fly.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

These unusual rooms on wheels are holdovers from the 1960s.

The romance of early commercial flight still fills this Art Deco destination.

A military museum and library dedicated to the citizen soldier.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

This Singaporean food-court stall was home to the world's cheapest Michelin-starred meal.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.