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TIL of the 1850’s Raising of Chicago. Buildings and whole streets were raised nearly 2 meters with screw jacks to allow the installation of a sewage system.

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Mevd8 TIL that the most expensive party in recorded history was hosted by the then Shah of Iran to celebrate the 2500th year anniversary of the Persian Empire. The party invited the world leaders of 65 nations. In today’s money the party would’ve cost around $650,000,000
nWnyr TIL: that some species of sharks have an umbilical cord at birth, therefore have a belly button
rNl4W TIL the main key to the Bastille is kept in George Washington’s home, Mount Vernon. It was given to him by the Marquis de Lafayette in 1790, who wrote “It is a tribute which I owe as a son to my adoptive father, as an aide-de-camp to my general, as a missionary of liberty to its patriarch.”
JY1n8 It’s never happened, and NASA feels confident that it never will. For one thing, astronauts generally don’t float free. Outside the ISS, they’re always attached to the spacecraft with a braided steel tether, which has a tensile strength of 1,100 pounds. If it’s a two-person spacewalk, oftentimes the astronauts are also hooked to each other.
Vpj4 TIL that the navel (belly button) is an erogenous zone, and that when touched, creates a tickling sensation in some people’s genitals.