Wien

Vienna


photography
Hofburg, Wien, Österreich. Public Domain.
photography
Johann Strauß, Wien, Österreich. Public Domain.

Wien (Vienna) is the capital of Austria and located in the lowlands at the northeastern end of the county. The Alps end right south of the city. The underground is a Mesozoic basin full of about 4 km of sedimentary rocks like limestone, sandstone, marl and more. The city was the capital of the Austro-Hungarian Emire for centuries. Like any large city with a long history it has numerous artificial underground sites, subterranea which were built for various reasons and are now open to the public.