Porta coeli is a 13th-century convent located in Předklášteří, near Tišnov, South Moravian Region, Czech Republic, after which the asteroid 3276 Porta Coeli is named. Situated in the valley of the Svratka River, this Cistercian convent was founded in 1233 by Constance of Hungary, widow of Czech King Otakar I.
The church was consecrated in 1239 by Bernhard, Bishop of Prague with approval and at presence of Robert the Englishman, Bishop of Olomouc. It has three aisles, a transept and a rather long sanctuary ending in a five-sided apse. Despite the austerity of the Cistercian rules, the western façade has a portal reminiscent of French cathedrals. It is unique in the Czech Republic.