Certainly not the Anne Frank house but could be on the same street. The task could be part of a detour; the lift part. Looks like one team member may have to run up to the third floor and be there to receive the large TV set the other member has to hoist up using a block and tackle arrangement (it would be too hard to do just with a simple pulley). We have Jenny hoisting (must be hot she is down to her tank top!) in one scene and the Goths celebrating after completing the task (rope piled at foot of the stairs). So that is at least two teams doing the Lift.
In the pole vault it is certainly the Roadblock. Grandson Nickolas is holding a red roadblock clue marker.
We have seen Jenny and Grandpa vaulting from Left to Right (both land in the water) so do they have to do it again until the land safely. Then we have Jason, Kynt, and one of the blondes jumping from right to left. Does the team member have to jump first over and then back before completing the task? Other people seen in the background standing and some jumping all are wearing orange shirts so must be part of a club or team which is monitoring the event.
After the pole vault, the teams seem next to have to peddle a bike-cart from the sporting venue to the mat at the marina. We have seen Jenny in the cart with Nathan peddling, she is muddy and the two backpacks are in the cart with her. Same is true with the two sisters. Julia is peddling I think.
A clue to where they are may lie if we can identify the license plate with has black letters on yellow field. Next to the EU symbol with the N for Netherlands are the letters SR SD 20 Of course, it could come from anywhere in the Netherlands.
Jason and Lorena look happy as larks, high fiving, at the Marina mat. Winners?