The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The oldest extant wooden jail in South Dakota and possibly the United States. 

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

The watery grave of an impractical idea.