Some of the Swiss stuff is indeed truly amazing, and so far free from the sort of run-down privatisation which ravaged the Austrian narrow gauge in the 90s - I was lucky to see THAT 20 years earlier in steam days.....
I had a holiday job on the FR in the mid-70s, amazing then and even more so now with the WHR appended, and through trains to Blaenau - when I was there the public trains only went to DDT.
Sadly, my offspring resides in South Wales, not north - so the nearest thing is the Gwili Railway, and even that is the best part of an hour away........! Will probably pay it a visit in the autumn.