Innsbruck (LOWI) if flown by regular procedures. In reality pilots must hold a special license for Innsbruck in order to start and land there. Certain aircraft types also are banned from operating there. The localisers have an offset, due to mountain peaks being in the way of the glideslopes.
A tutorial flight Amsterdam-Innsbruck (EHAM-LOWI) with descriptions and charts at the end.
https://www.dropbox.com/s/qxo5lryi8w...Tutorial-2.pdf
More stuff especially for online sim-flyers:
http://wiki.vacc-austria.org/index.p...OWI_for_pilots
When taking off there and needing to u-turn and doing it too early, terrain radar usually makes itself heard.
Default scenery in FSX depicts the mesh too forgivingly. I use a special scenery covering not only the airport, but the city and the whole valley as well in more precision and detail.
I think big airliners only come from and launch towards the East. However, if following regular charts and procedures, even an approach(from the West) in a small airplane like a Cheyenne or a local commuter like a Jetstream 4100 can be a challenge - if doing it like demanded.