This card from Visby, sent by Merja, is the most recent acquisition for my unesco collection. The Hanseatic Town of Visby, on the Gotland island, Sweden, in on the Unesco WHS list since 1995.
"A former Viking site on the island of Gotland, Visby was the main centre of the Hanseatic League in the Baltic from the 12th to the 14th century. Its 13th-century ramparts and more than 200 warehouses and wealthy merchants' dwellings from the same period make it the best-preserved fortified commercial city in northern Europe.
Visby is an outstanding example of a north European medieval walled trading town which preserves with remarkable completeness a townscape and assemblage of high-quality ancient buildings that illustrate graphically the form and function of this type of significant human settlement. The urban fabric and overall townscape of Visby is its most important quality." - in: www.whc.unesco.org/en/list/731