Blue House, Villa and entertainment centre in Holešovice, Prague, Czech Republic

The Blue House (Modrý dům) is an early modernist villa at čp. 291/VII in Prague 7 Holešovice, designed by Josef Zasche for sculptor Karel Wilfert Jr. and built in 1904–1905. Its L-shaped plan with a mansard roof was extended in the 1930s by a lower north wing with a steep gabled roof. The façade has ceramic tiles with ornaments in the gable and a mosaic sundial between the second-floor windows.

Josef Zasche designed the villa for sculptor Karel Wilfert Jr., and it was built in 1904–1905. Wilfert ran a private art school there with graphic artist Richard Teschner in 1908–1909; Teschner later bought the house. After February 1948 it was nationalised and used by the diplomatic service administration, which stripped its original colours and added a box-like northern extension.

The house is named for its original grey-blue plaster and the deep blue elements on its façade; it was also called Wilfert Villa after its first owner. Since 1992 it has belonged to the Christian Community in the Czech Republic, which added a chapel of St John in 1995 in the former ground-floor garage. The Josef Adamec Gallery occupies the second floor.

The Blue House stands at čp. 291/VII in Holešovice, Prague 7, on Letná. It is the seat of the Community of Christians in the Czech Republic, and the Gallery of Josef Adamec occupies the second floor; the MUD Prague route also starts here. The building is not a public residence, so visits depend on the gallery and the community's programme.

The mosaic sundial between the second-floor windows is attributed to the first owner, sculptor Karel Wilfert Jr., not to Richard Teschner, who bought the villa a few years after completion. Wilfert ran a private art school here with graphic artist Teschner in 1908–1909.