Sir John Soane’s Museum.

Stacked to the rafters with art, sculpture, wonders and curiosities. A unique treat. 13 Lincoln’s Inn Fields, WC2 / T: Holborn / 7405 2107 / 10am-5pm Tue-Sat / candlelit tours 6-9pm 1st Tue of the month, but arrive very early, only 200 tickets are issued on first-come basis / soane.org