Lines from a walking song are etched into a rock in Natural Bridge State Park.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Beside the pew where C.S. Lewis often sat while attending church, a window filled with characters from his beloved stories.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

A plain wooden seat that once belonged to one of the most prominent figures of the Protestant Reformation.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A clock designed to run with perfect accuracy for 10,000 years.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

The oldest working mechanical clock in the world.

The most accurate timepiece in the world.

Only a few pieces remain of a grand 16th-century water clock that once announced the changing hours with the sound of bells, gongs, and drums.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

An homage to the pointers and retrievers that have long been a hunter's best friend.

This museum pays tribute to the Cherokee leader who created a written language for his people.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

The secret city built by the Manhattan Project.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

A limb from Indiana's largest sycamore tree on record.

One of the last remaining covered bridges in the region.