30 years · All Facts

30 years
The Statue of Liberty was copper-brown at its 1886 unveiling; the familiar green patina took about 30 years to fully form as the copper oxidized.
SrcNational Park Service — Statue of Liberty FAQs

Next evidence →55 languagesEach Voyager Golden Record carries greetings in 55 languages, natural sounds, music, and a printed message from President Carter — selected for NASA by a Carl Sagan–led committee.

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not a single spanNo bridges cross the Amazon River — not a single span across this continental waterway, per Britannica.
SenetAncient Egyptians played Senet — a board of three rows of ten squares — from the Predynastic Period through at least the Late Period.
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