Charles Bridge is THE bridge to see in Prague. It's official because it's prominently featured in both "XXX" and "Bad Company" (actually it's really nice and you cannot avoid it if you visit Prague). The bridge is currently undergoing large-scale renovations and today, special tube was inserted into its foundations, with "mementoes for future generations".
The tube - which is expected to be found and reopened several centuries into the future - contains, among other things, a DVD DISC!!!
What are those people smoking? Can you imagine someone in the year 2345 or so finding the shiny disc, being able to read the bits from it and being able to reconstruct them into sound and inferior (i.e. 2D) picture?
Of course, if the tube also contains the specs for MPEG compression and deCSS, I am ready to apologize to the authors...