@vonny,
Austria has dozens of pretty Klamms (ravines). And certainly the Sigmund-Thun-Klamm is a very pretty one!
Two of my sisters-in-law live close to a geological museum in Styria, which has a very nice Klamm with several old and new bridges as well
Nothklamm in Gams bei Hieflau, Styria, Austria