The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

A war memorial that appears to ascend from its forested setting.

The place where travelers of the Mohawk Trail forded the Deerfield River rather than pay the toll at the turnpike bridge.

A monument to the Mohawk people stands along an old Native American trade route.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

A lush indoor jungle fills this bustling Madrid transportation hub.

Mass graves and Victorian monuments mark the history of Memphis in this 19th century cemetery.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Walk the whole Mississippi River!

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

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This homegrown adoption center offers a wonderland of feline companionship.

Elvis's own personal tropical hideaway.

The world's largest church atop a political fault line.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

A rare underwater observatory in the Caribbean that provides breathtaking views of vibrantly colored aquatic life.

A mountain of conch shells created by centuries of fishermen.

Money may not grow on trees, but it can be dispensed by one.

Smoky, also known as "Yorkie Doodle Dandy," was a four-pound hero of World War II.

Acres of English cottage gardens, unexpectedly nestled in a Cleveland suburb.