Janówek is a neighbourhood in Warsaw, Poland, located within the district of Ursynów, within the City Information System area of Skarpa Powsińska.

In 1943 artist Wojciech Fangor, created there a ceiling painting titled Pleiades, with mythological and astronomical motives.

[9] In 1974, to the west established the Polish Academy of Sciences Botanical Garden – Powsin Centre for Biological Diversity Conservation, with an area of 40 ha.

[1][3] To its west, at 2 Prawdziwka Street, is located the Polish Academy of Sciences Botanical Garden – Powsin Centre for Biological Diversity Conservation, which has an area of 40 ha, and includes over 10,000 species of plants in its collection, including numerous exotic and rare examples.

[12] The building also includes a 1943 ceiling painting with mythological and astronomical motives, titled Pleiades, by artist Wojciech Fangor, which has the protected status of cultural property.