We are crossing the border Lithuanian border with the Russian region of Kaliningrad. We take a bus from Nida that drops us in the town of Zelenogradsk.
In the bus we are the only non Russian passangers together with two other germans. Although it is not difficult to cross the border you need a Russian visa which is expensive and takes some days if not weeks.
In the border we are forced to go out of the bus and get all our luggage through a security scanner. We also need to fill inmigration forms. Nothing specially traumatic.