The Alexander Nevsky Cathedral is an orthodox cathedral in the Tallinn Old Town, built in in a typical Russian Revival style between 1894 and 1900, during the period when the country was part of the Russian Empire.
The Tallinn Town Hall (Tallinna raekoda) is a building in the Tallinn Old Town; it is the only intact gothic style town hall in the Northern Europe. The first recorded mention dates from 1322. Its present form dates from 1402–1404, when the building was rebuilt.
The first wall around Tallin was ordered to be constructed by Margaret Sambiria in 1265 and for that reason, it was known as the Margaret Wall. The walls were enlarged and strengthened in the fourteenth century; many gates are still largely extant today.
Both of the Europa: Astronomy stamps from 2009 were used; dedicated to the eminent Estonian astrophysicist Jaan Einasto who is one of the discoverers of the large-scale structure of the Universe. Another thanks for...:)