Home of Howard Hughes' Spruce Goose.

The wooden airship was the largest flying boat ever built.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

This is one of the last surviving structures of a once vast palace complex.

Learn all about this iconic air rifle without putting an eye out.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

Former host to the World Elephant Polo Championships.

Everything from a plane to your own two feet are needed to reach this jungle resort.

A roadway designed for a visiting monarch.

An ancient fortification lives on in this Chinese city.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

One of the world's tallest flagpoles.

Art Deco stylings conceal the true nature of this bridge.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

The first KFC is on the National Register of Historic Places.

The former home of the man whose radical ideas changed the nation.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.