Feast of the Dedication of the Basilica of St. John Lateran - Nov 9

My son and wife during our trip to Italy in 2010 in front of St. John Lateran, "The Pope's Cathedral."

Today we celebrate the Dedication of the Lateran Basilica in Rome on 9th November 324 AD by Pope St. Sylvester.  Every bishop has a cathedral, and the Pope’s cathedral is the Basilica of St. Johns Lateran, not the Basilica of St. Peter. Hence it bears the title Omnium urbis et orbis ecclesiarum mater, et caput (the mother of all the churches in the city and in the world – and their head). The Laterani palace was donated to Pope by Constantine, the first Christian Roman Emperor. The first church built in that property was called the Basilica of the Savior. Later the Church was dedicated to St. John the Baptist and St. John the Evangelist and so it was called the Basilica of St. Johns Lateran. The central theme of today’s readings is the warning that, as baptized Christians, we are the temples of God where the Spirit of God, the real Source of all spiritual blessings, dwells and that we should not desecrate the temple of God by sin. 
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Virtual Tour of the Sistine Chapel

http://www.vatican.va/various/cappelle/index_sistina_it.htm

An absolutely amazing virtual tour of the Sistine Chapel!