This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

This simple home was the beginning of a long journey for the iconic Western film star.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

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

This massive roadside mascot was the first version of the giant to illustrate his butt.

A bizarre house filled with an astounding array of collections.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Home to the most complete dodo remains known - one head, and one foot.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

Historic medieval fortified city in southwest France.

French commune at the heart of conspiracies.

The oldest Naval cemetery on the West Coast.

The former Naval shipyard is open for exploring - mostly.

A historic hotel in an old California railroad town with a rowdy reputation.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A man-made island in scenic San Francisco Bay.

A promotional sun clock on the site of San Francisco's great raceway.

The miraculous hydrant that saved the Mission District in 1906.