CHANGING YOUR LENIN
The body of Vladimir Lenin has been on display at his mausoleum since his death in 1924, but the preservation of his body is not the simple matter of just freezing it as many people believe. Once every now and then, Lenin's keepers have to do maintenance to make sure that the body does not show signs of decay. This means cleaning the body and submerging it in a mysterious liquid solution that is a state secret (but many believe it contains formaldehyde and a few other preservatives.)
Here is a look at how Russia keeps their Lenin nice and fresh.