In May 2016 I was in the Baltic States: Lotvia, Lithuania, Estonia and the oblast Kaliningrad.
Napoleon had done there a lot.
The battles of Eylau and Friendland are wellknown.
Also Tilsit, now called Sovjetsk.
Entering Kaliningrad is very hard: you need a visum (150 euro) and wait on the border for more then two hours!
But: the results are there!
You can see them on:
www.roelkvos.nl/napbal
Here are some pictures
The monument on the Kalingrad-site
the place, where the raft has been (on the Lithuanian-site,
this picture is taken on the Kaliningard-site)
From the curch in Friedland: the battlefield of Friedland