This is as niche as museums get, but it’s classy and it truly has the best of what it claims to honor—some 4,000 artful specimens, many of them precious, going back a millennium. Fans were necessities in the centuries before air-conditioning, when flames generated constant heat and corsets severely restricted breathing; these tools were the only things that helped ladies remain conscious. There are regular exhibition of the little lifesavers, such as collections of Christmasthemed imagery, Biblical themes, and so on. The museum also offers a reasonably priced afternoon tea at 2:15 and 3:45pm (reservations required)—don’t faint, but it’s just £9.