Archaeologists have discovered the foundations of the oldest church yet found at Prague’s Vyšehrad, Czech Television reported. It would have been one of the largest churches in Central Europe in its day. Ladislav Varadzin of the Institute of Archaeology of the Czech Academy of Sciences told Czech TV that its shape indicated it probably originated during the Byzantium Empire. The foundations were discovered around 150 metres from the main basilica at Vyšehrad, a historical fort probably built in the 10th century. The complex’s St. Martin’s Rotunda was previously believed to have been the first church there.