When we read Shaggy's mission (to see mystic places around the world) we thought about where to place him. We decided to hide him as follows:
In the eastern part of Lower Saxony (Germany) there are mountains called "Harz". They're about 800 m above sea level. It is a real mystic area because of:
a.) a lot of legends of witches and magicians in the middle ages.
b.) across the mountains was the former border between the eastern and the western part of Germany, a lot of crimes and dramatic rescues of refugees happened here.
Deep deep in a dark forest there is a lost place called "Werk Tanne" ("Factory Fir"). while WW2 it was the fifth biggest ordnance factory in the German Empire. Prisoners had to build bombs and shells while WW2. From above you couldn't see anything of this huge area because trees grew on the building roofes.
Attached you'll find a picture series. I guess that is the most spectacular place a member of Shaggy's gang ever has seen.
It was a pleasure to help Shaggy!