Wiltshire Heritage Museum is full of interesting facts and artefacts from Stonehenge. Our friends had pre-booked a special access visit to go inside the great stone circle, a spooky experience on a winter evening. If you want to do the same here's the English Heritage website.
locks at Caen Hill, Devizes.
(29 locks in 2 miles). You have to operate them yourself so it must take an age to get up or down in your narrowboat.