Austria (Salzburg, Austria. Credit: Taxiarchos228, Licence art libre)
Baltic States (Tallinn, Estonia. Credit: Khora, CC by SA 3.0)
Belgium (Grand Place, Brussels, Belgium. Credit: Francisco Anzola, CC by SA 2.0)
Britain (Palace of Westminster, London. Credit: David Iliff, CC by SA 2.0)
Bulgaria (Alexander Nevsky Cathedral, Sofia, Bulgaria. Credit: Glabber, Wikimedia Commons)
Croatia (Dubrovnik, Croatia. Credit: Greenweasel, CC by SA 3.0)

Czech Republic (Prague Castle and Vitava River. Prague, Czech Republic. Credit: Nohaaaa, CC by SA 4.0)
Denmark (Nyhavn waterfront, Copenhagen, Denmark. Credit: Guojunjun, CC by SA 3.0)
France (Louvre Pyramid, Paris, France. Credit: Benh Lieu Song, CC by SA 3.0)
Germany (Brandenburg Gate, Berlin, Germany. Credit: Thomas Wolf, CC by SA 3.0)
Greece (The Parthenon, Athens, Greece. Credit: Steve Swayne, CC by SA 2.0)
Hungary (Hungarian Parliament Buildings, Budapest, Hungary. Credit: Serge Bystro, CC by SA 2.0)