Enjoyed seeing intricately gorgeous astronomical artefacts such as compendiums, telescopes, astrolabes and globes. If you're a fan of Philip Pullman's His Dark Materials trilogy you might spot a few alethiometer lookalikes. Don't miss the blackboard featuring an equation written by Einstein - it's displayed downstairs in a fairly low-key manner. The building itself is lovely and really envelops you in the Oxford tradition. Toilets are over the road in the fabulous bookshop, on the third floor. Refreshments were enjoyed in the King's Arms pub diagonally across the road.