TIL that a man bet his friend that he could make any house famous. To accomplish this, he wrote thousands of letters requesting services at 54 Berners Street. So many people showed up on the day that parts of London were shut down. The man (who watched it unfold from across the street) won the bet.
TIL that during the Western Schism of the Catholic Church, there was a cardinal appointed by Antipope Benedict XIII who split with the others and, acting as the entire college of cardinals, elected someone Pope all by himself; when that guy died, he elected himself Pope all by himself.
TIL In 2001 Shaquille O'Neal made a hip-hop album produced by Dr. Dre and others, that has never been released.
TIL there are at least 17 satellites like the Hubble Space Telescope. They are spy satellites pointed at Earth and Hubble is basically built from spare parts.
TIL of the 67 people who have served as President of Bolivia, 13 (19%) died by tragic means. 5 died in office, 3 by assassination and 2 of the 5 who died were suspected assassinations. A further 8 former presidents were assassinated in various ways after leaving office.