Meme Kidnapped from scarlettina

In the comments below, share a factoid or a bit of info that other people can learn about from you (so no making stuff up that isn't true)... advice, educational stuff, whatever. However, do not repeat knowledge on a subject that has already been commented on, and if you see something you didn't know about before make sure to let the person know.

As scarlettina did, I'll start with a randomness:

Until 1698, when the Virginia governor specified that Capitol would be the name of the planned statehouse in a village then known as Middle Plantation, the word capitol had been used only as the name of the great Roman temple at Rome.

(quoted from Garner's Modern American Usage, p. 127. Garner cites Mitford M. Mathews, American Words, pp. 62-63 (1959; repr. 1976))