Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

A unique, free-floating electric ferry may be the only of its kind in Europe.

The Isle of Wight’s “Island Line” serviced by former London Underground trains from the 1930s.

Legend has it this 11th-century castle was paid a visit from the devil.

One of few remaining antique carousels with stationary animals in the U.S.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

For nearly 200 years the same family has harvested ice from a small pond in eastern Maine.

Oberweissbacher Bergbahn - a broad-gauged cable car capable transfering railcars.

One of the most well-known city festivals in the world.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

A lush green oasis in the middle of Chicago.

This mountain tram provides stunning views while hanging from a single, steel thread.

A steam powered train that runs on city streets.

A Collegiate Gothic quadrangle that surrounds an 18th century secondary school whose financing came from the likes of Alexander Hamilton and Aaron Burr, among others.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

One of England's most famous churches hides a pair of little known architectural treasures.

Millions of dollars worth of sculpture decorate this Iowa city center.

Orcas on display and in the water.

Internationally-recognized arts center housed in a century-old former military barracks.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

An entire city block built completely out of petrified wood.

Working wool mill used as the exterior for the mill in the 1990 horror film "Graveyard Shift."