In the Middle Ages, Speyer Cathedral was one among the largest properties on earth. In 1981, it was extra for the UNESCO Globe Heritage Record. Speyer Cathedral, officially the Imperial Cathedral Basilica of the belief and St Stephen, in Latin: Domus sanctae Mariae Spirae (German: Dom zu Unserer lieben Frau https://www.tourcounsel.com/2021/07/speyer-cathedral-germany.html