When White made landfall, he found fresh tracks in the sand, and the word "CROATOAN" carved into a post. The houses had been dismantled and all items had been removed. Although White attempted to locate the colonists, they were never heard from again.
Kryptos
This mysterious encrypted sculpture was designed by Jim Sanborn. It currently resides outside of the CIA headquarters in Langley, Virginia. In fact, the statue is so complicated and puzzling that not even the CIA itself has been able to crack the code.
The sculpture contains four inscriptions. Three have been cracked, but the fourth remains unknown. In 2006, Sanborn hinted that there are clues in the first inscription that may crack the last one. Four years later, he released another clue—letters 64 through 69 (NYPVTT) in the final inscription translate to the word "BERLIN".
Stonehenge
This prehistoric monument is located in England. Stonehenge is one of the most famous landmarks in the United Kingdom. It remains unclear as to how or why the structure was built.