A tiny replica of the iconic London landmark hides on the side of the steel structure.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This vacant station is a relic of harvest processing techniques of the mid-20th century.

For more than 50 years, an iconic sign has greeted visiting “fudgies” to the Traverse City area.

Michigan’s most famous shoe tree.

A singular collection of hand-built art deco cars are held in a building with style to match.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

Oldest building in California still in use.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

America's only nuclear missile silo open to the public.

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

The key to turning shifting dunes into the green oasis of Golden Gate Park.

St. Augustine's record-setting narrow street was designed to protect against pirates.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.