St Kilda is a remote archipelago located approximately 64 km west-northwest of North Uist in the Outer Hebrides, Scotland. The archipelago consists of four main islands: Hirta, Soay, Boreray, and Dun, as well as several smaller islands and sea stacks. The islands are formed from ancient volcanic rock and have been inhabited for thousands of years, with the last residents leaving in 1930.

The archipelago is a UNESCO World Heritage Site due to its unique natural and cultural significance. It is home to a variety of seabirds, including the largest colony of gannets in the United Kingdom, and has been recognized as one of the most important seabird breeding sites in Europe. The islands also have a rich cultural history, with evidence of human occupation dating back to prehistoric times. The remains of Iron Age and medieval structures can be found on the islands, as well as a village and other buildings dating from the 19th and early 20th centuries.

The archipelago is only accessible by boat and is a popular destination for birdwatching, hiking, and cultural tourism. Visitors can explore the remains of the village and other historic buildings, as well as take guided walks to observe the birdlife and natural beauty of the islands. Due to the fragile nature of the ecosystem and the historic structures, access to certain areas of the islands is restricted.