I'll always associate the Orkney Islands with the 2019 World Heritage Site meet-up, since they were the first place I met some of the regulars from this forum, to include Nan in Kirkwall, Hubert in Stromness, and a near miss of Philipp and Jasam and their wives, whom I unknowingly passed by at lunch. Orkney also had an exceptionally interesting World Heritage Site, the Heart of Neolithic Orkney, the components of which have been very well documented below. Of the components, I most enjoyed Skara Brae, a neolithic coastal settlement uncovered in the 19th century, though I'd also highly recommend a visit to the mounded tomb of Maes Howe, which generally requires an advance reservation for a guided tour. If there is time, the walk between the two groups of standing stones is very scenic, and takes one right next to the Ness of Brodgar archaeological site, which I though was well worth the detour. Summer turned out to be a great time to explore this site, and I can only hope the weather is as nice for other visitors as it was for me.

Logistics: Many others have documented how to get to Orkney via Stromness, but if you have your own car, I can recommend the short ferry ride from St. Margaret's Hope to Gills Bay, from where one can drive along causeways around the Scapa Flow to Kirkwall on Orkney.