Every 25 years since 1300 A. D., the Catholic Church opens the sealed Holy Doors of four basilicas in Rome, from 12/24/24 to 1/6/26.

Every year, from January to March, you can experience the moving phenomenon of the monarchs in the Central Highlands of Mexico.

Since the very first one in London 1851, the Worlds Fair takes place every 5 years and will be hosted by Osaka Kansai 4/13/25 to 10/13/25.