2918 NORWAY - The clothing and the arms of the Vikings

Between 790s and 1066, during the period commonly known today as the Viking Age, the mere sight of Norsemen's longships aroused fear among the inhabitants of the European coastal areas and along inland rivers through what is now Russia, Belarus and Ukraine, up to Constantinople. Remaining in collective memory of Europeans primarily as fierce and ruthless warriors, the Vikings also opened trade routes, explored new territories, founded settlements and states, and even fought as mercenaries.

2345 ESTONIA - The map of the country

Estonia is a country in the Baltic region of Northern Europe, bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia, and to the east by Russia. With a population of 1.3 million, it is one of the least-populous member states of the European Union. Ethnic Estonians are Finnic people, and the official language, Estonian, is a Finno-Ugric language closely related to Finnish. It is a developed country with an advanced, high-income economy and high living standards. The capital and its largest city is Tallinn

2112 IRELAND (Leinster) - The Monastic City of Clonmacnoise and its Cultural Landscape (UNESCO WHS - Tentative List)

2112 The monastery of Clonmacnoise
- McCarthy's Tower

Situated on the River Shannon, south of Athlone, the monastery of Clonmacnoise (Cluain Mhic Nóis in Irish, meaning "Meadow of the Sons of Nós") was founded in 544 by Saint Ciarán, one of the Twelve Apostles of Ireland. The strategic location helped it become a major centre of religion, learning, craftsmanship, and trade by the 9th century and together with Clonard it was the most famous in Ireland, visited by scholars from all over Europe.