Very interesting and great value. We decided to take out a friends of the tunnels membership so we could do the extended tour of the house and we are very glad we did. It was only £7.50 for the two of us, but well worth it. Very informative guide, who was clearly very passionate about the project and it was very interesting to see the scale of it. There are quite a few steps, which was fine for us, but worth mentioning for anyone who struggles with mobility.
