The Happy Valley set was a group of mostly British and Anglo-Irish aristocrats and adventurers who settled in the "Happy Valley" region of the Wanjohi Valley, near the Aberdare mountain range, in colonial Kenya between the 1920s and the 1940s. During the 1930s, the group became infamous for its hedonistic, decadent lifestyles and exploits amid reports of drug use and sexual promiscuity.

Nyeri is a town situated in the Central Highlands of Kenya. It is the county headquarters of Nyeri County. The town was the central administrative headquarters of the country's former Central Province. Following the dissolution of the former provinces by Kenya's new constitution on 26 August 2010, the city is situated about 150 km north of Kenya's capital Nairobi, in the country's densely populated and fertile Central Highlands, lying between the eastern base of the Aberdare (Nyandarua) Range, which forms part of the eastern end of the Great Rift Valley, and the western slopes of Mount Kenya.