You do not need a reservation to physically enter the Dachau Concentration Camp Memorial Site in 2026, as admission is free and the site remains open to the public as a place of remembrance. However, if you wish to participate in an official guided tour or use an audio guide, you should strongly consider booking those in advance through the memorial's official website. Guided tours in English are limited in capacity and often sell out days in advance during the peak summer months. Additionally, if you are traveling as a "group" (typically defined as 10 or more people), you are required to register your visit in advance to ensure the site can manage the flow of visitors. For the solo traveler, you can simply take the S2 train from Munich to Dachau and then the 726 bus to the memorial; you can walk through the gate and explore the museum and grounds at your own pace without any prior paperwork. It is a "pro" tip to allow at least 3 to 4 hours for the visit, as the site is extensive and the emotional weight of the exhibits requires a somber, unhurried pace to fully comprehend.