Hello,
I can record for you me walking in my small town (Lwówek Śląski, Poland) in 4k 60fps.
We have of course beatiful town hall, towers, city walls, etc.
I don't know if I can record 20 minutes of that, but at least 5 minutes I can.
You'll pay 2 euro for every clip (for example 20 seconds of Black Tower) in the whole video?
Please, write to me so we can talk more.
Best,
Marcin