^ I just like DropBox as it is always at hand xD
and the pedestal says:
Imperatrici Alexandrae Metropolin Finlandiae Primum Adventati die XXIX Maji X Juni MDCCCXXXIII
It is the oldest public memorial in Helsinki.
on top of the obelisk, there is the Earth with the Russian Two headed eagle standing on it and carrying a crest with the finnish lion in it.
The monument actually has quite a history and is definitely one of the things to see in Helsinki.