This is not a joke. Woodhenge is right down the road from Stonehenge. There’s nothing actually left of the original structure except for holes in the ground, which have been helpfully filled with concrete columns to represent the original wooden poles that would have stood there. It seems to have followed a similar pattern to Stonehenge but is not very well known (probably because there’s not much left). It took us less than half an hour to stop, read the signs, and look around, and it made a very cool addition to the trip.
P.S. — Woodhenge