Oblouk, Cultural monument house in Poruba, Czech Republic.

Oblouk is a six-storey, roughly 250-metre-long arc-shaped complex of twelve linked modules on the southern edge of Poruba, with 225 flats and ground-floor shop pavilions on the south side. Two roads pass through its arcades, where stylised columns separate pedestrians from traffic, and a clock tower rises at the western end above the Porubka. A relief of workers returning home crowns the building.

Construction began in June 1952 on the design by Vladimír Meduna and Evžen Šteflíček, and the first tenants, mostly OKD miners, moved in at the end of 1954. Nikita Khrushchev was received here by President Antonín Novotný on 13 July 1957 and questioned whether the windows were large enough. The Ministry of Culture declared it a cultural monument on 27 March 2008.

The relief above the arch shows workers returning home, with a family and a dog beside a figure in work clothes. Around the attic windows and inside the main passage are 114 original sgraffiti, whose patterns copy Renaissance buildings in Prague.

The arch spans about 250 metres across six floors, with a road junction in the middle and two passages for cars and pedestrians; the pedestrian strips inside the passages are separated from the roadway by stylised columns. The clock tower at the western end stands above the Porubka river, and the eastern end joins the neighbouring housing block.

Seen from above, the building and the road passing through it form the outline of a hammer and sickle. The twelve separate units were joined into one structure, and the clock tower at the western end stands above the Porubka stream.