Excellent tour! I asked to see hometowns and churches of my ancestors in Groningen and he totally delivered. I do lots of genealogy but Jaap found more info that I didn't have. He spent hours creating a genealogy notebook for me. He also gave very good info on the dykes and took us up close to see how they worked. A few visits had to be arranged ahead of time and he took care of that. This was a very well planned and thought out tour! Jaap is very personable, knowledgeable and organized! Highly recommend!