It's easy to forget how old photography is.  Given that flying,
internal combustion engines, electricity, the telephone, and
other staples of modern life didn't get cranking until the late
1800s and early 1900s, it's always startling to be reminded how
relatively long photography has been with us. But it got started
in about 1800.  This picture, a daguerrotype, was tweeted by
Paris Savant. It's billed as the first-known picture of Paris.
According to Wikipedia, it's also the first known picture with
people in it:  "Boulevard du Temple", a daguerreotype made
by Louis Daguerre in 1838, is generally accepted as the earliest
photograph of people. It is a view of a busy street, but because
the exposure time was at least ten minutes the moving traffic
left no trace. Only the two men near the bottom left corner, one
apparently having his boots polished by the other, stayed in one
place long enough to be visible.