Original Leonardo da Vinci drawings!
I found it really thrilling to stand close to and examine carefully the real things!
To celebrate the 500th anniversary of Leonardo da Vinci's death there are currently 12 exhibitions here in UK each with I think 12 original drawings from the Queens's collection..
(See more here.)
In Scotland the only venue is at Kelvingrove Art Gallery in Glasgow which rang with the sound of humdreds of children enjoying themselves today (school holidays here). The gallery has always been free, and always been family friendly and (the replica of) Dippy the Diplodocus - see this post - is still drawing the crowds.