A nice UNESCO cover from the UNO in Vienna, depicting 3 stamps (from a set of 6) issued in 2018 with 3 UNESCO places in United Kingdom: Stonhenge, Maritime Greenwich and Edinburgh (Scotland).
1. Stonhenge and Avebury (since 1986), in Wiltshire, are among the famous groups of megaliths in the world. Both sanctuaries consists of circles of menhirs arranged in a pattern whose astronomical significance is still being explored. These holy places and the nearby Neolithic sites are an incomparable testimony to prehistoric times.
2. Maritime Greenwich (since 1997), in London area, symbolize english artistic and scientific endeavouir in the 17th and 18th centuries. The Queen's House was the first Palladian building in England, while the complex that was until recently the Royal Naval College, was designed by Christopher Wren. The park contains the Old Royal Observatory, the work of Wren and the scientist Robert Hooke.
3. Edinburgh (since 1995), has been the scottish capital since the 15th century. It was two distinct areas: the Old town, dominated by a medieval fortress; and the neoclassical New Town, whose development from the 18th century onwards had a far-reaching influence on european urban planning. The harmonious juxtaposition of these two contrasting historic areas, each containing many importante buildings, is what gives the city its unique character.