Zámeček Sluncová, Neoclassical château in Karlín, Czech Republic.

Zámeček Sluncová is a two-story manor house in Karlín combining Neoclassical and Baroque design elements on its facade. The elongated building features rusticated corners, a hipped roof with two prominent roof pavilions, and is surrounded by a columned fence enclosing gardens, a chapel with grotto, a water reservoir, and a house built over a spring.

Sluncová is documented as a vineyard estate in the mid-17th century, when the land belonged to Josef Slunec, mayor of Prague's New Town. In 1682 Jan Jiří Reismann of Riesenberk, mayor of the Old Town, bought the vineyard with its Baroque homestead. Around 1800 the estate was rebuilt as a Neoclassical summer house; in 1870 it was bought by the industrialist Julius Haine, hence the name Hajnovka.

The estate's name comes from Josef Slunec, mayor of Prague's New Town, who owned the vineyard in the mid-17th century. The grounds also hold a rare structure with a grotto on its ground floor and a chapel above, built at the end of the 18th century; it is now in emergency condition and listed among endangered monuments.

The chateau stands at U Sluncové 10/64 in Karlín, separated from the rest of the former estate by a fence; the grounds and buildings around it belong to different owners. The chateau itself is in good condition, but the grotto with chapel and other structures in the grounds are dilapidated and listed among endangered monuments. It serves as a training and representative centre, so the interior is not open to casual visitors.

The estate's protected monument status, granted in 1964, covers more than the manor: it also includes a rare structure built into the slope, with a grotto on its ground floor and a chapel above. This grotto-and-chapel building is in emergency condition and appears on the list of endangered cultural monuments.