The Oslekov House is the grandest of Koprivshtitsa's six house-museums and the one that best conveys what serious money looked like in 19th-century Bulgaria. Built in 1856 for the merchant Nencho Oslekov, it is a two-storey National Revival mansion with a symmetrical facade of blue and white, bay windows supported on carved brackets, and a courtyard with a fountain.
Inside, the rooms are stacked with the trappings of Ottoman-era merchant prosperity: Damascus-patterned textiles, carved wooden ceilings unique to each room, niches lined with blue Iznik-style tiles, and walls decorated with naive paintings of cities Oslekov had traded in. The combined ticket covering all six house-museums is worth buying here — this is the best place to start, and the contrast with the more modest houses you'll visit later is instructive.