Lewis chessmen

The Edinburgh share of the Lewis chessmen, on display at the National Museum of Scotland The museum's eleven pieces passed through private collections before it acquired them in 1888. Here the kings and queens sit on their carved thrones beside bishops and warders, close enough to compare faces. Most are walrus ivory, but two of Edinburgh's pieces are carved from sperm whale teeth instead; see if you can tell which. Worth the trip if you are already in the city, because the case rewards a long look.