This is one of the many places that got pummeled during Katrina, and came out better. It was renovated and reopened with a coin museum, of interest for numismatists (look! O-minted coins, struck right here!) and regular folk (oooh, so that’s how they made those, back before computers!). It’s the only building in America to have served as both a U.S. and a Confederate mint. Upstairs a jazz museum will return in full force in 2017; in the meantime the temporary jazz exhibit holds up well. It’s all easily perused in 60 to 90 minutes. The third floor has a hidden gem: a gorgeous performance space with music, lectures, cooking instructions, or something equally interesting most days that is usually free and definitely worth checking out (www.musicatthemint.org). Fun fact: Ghost hunters believe William Mumford, who met the noose here in 1862, still hangs around.