Yes, it is 
I was there with a friend who designed hydroelectric dams for a living, so we could also tour the generator building. 100 year old machines were beautiful and awesome:
We have also seen ones in Pilchowice, Złotniki, Bukówka and Lubachów and a whole lot of other interesting stuff.
The area has also has a lot of German WWII tunnels (some of which have been turned into museums) and weird military installations (notice, how large that thing is):
There are even WWII tunnels under the Książ castle, that are open to tourists.
