I received this postcard in the World Languages RR, written in Russian :) It shows the Orthodox cathedral in Tallinn, the capital of Estonia.
The Alexander Nevsky Cathedral is an orthodox church in the Tallinn Old Town, Estonia. It was built to a design by Mikhail Preobrazhensky in a typical Russian Revival style between 1894 and 1900, during the period when the country was part of the Russian Empire. The Alexander Nevsky Cathedral is Tallinn's largest and grandest orthodox cupola cathedral. It is dedicated to Saint Alexander Nevsky who in 1242 won the Battle of the Ice on Lake Peipus, in the territorial waters of present-day Estonia. The current Russian patriarch, Alexis II, started his priestly ministry in the church.