Discover 2,000 years of Utrecht's history under the cathedral square. Explore the monuments, dating back to the Roman era, Castellum "Tractum", with an interactive flashlight. Walking through the massive foundations of the medieval Gothic Dom cathedral, history is literally brought to life. The museum provides historically well-rounded and very friendly guides who answer all visitors' questions even after the tour is over. There are also some short documentaries presenting the history of the cathedral.