PT Journal AU Taibl, P TI Medieval constructions built of slate on the right river bank of PragueDie mittelalterlichen gemauerten Schieferkonstruktionen am rechten Moldauufer SO Staleta Praha PY 2018 BP 96 EP 111 VL 34 IS 2 DI 10.56112/sp.2018.2.04 WP https://staletapraha.cz/en/artkey/pha-201802-0004.php DE Prague - Middle Ages - Old Town of Prague - New Town of Prague - Ordovician slate - stone buildings - early Gothic - fortification - revetted ditch - burgher houses - building material SN 02316056 AB The building stone of medieval Prague is white or yellow tinted opuka. Its hegemony is occasionally disrupted by non-traditional stone material, mainly various kinds of sandstone or black-grey Ordovician slate. Sporadic constructions from this dark atypical material raised great interest in the early days of detailed research of Prague historic centre. The knowledge of the buildings with massive use of slate was revised after several decades of intensive rescue excavations. Comprehensive catalogue proves the use of Ordovician slate as construction material in the medieval Prague as absolute exception. The traditional presumption that the slate houses are contemporary with the later stage of the Romanesque ashlar houses was not confirmed. ER