Trolling LiveJournals today I discovered that archeologists think they may be closing in on Ghengis Kahn's tomb:

Archaeologists have unearthed the site of Genghis Khan's palace and believe the long-sought grave of the 13th century Mongolian warrior is somewhere nearby, the head of the excavation team says.

It would appear the Mongolians don't particularly want anyone to find the tomb, as several earlier efforts have been called off due to both official and unofficial hostility.