The Umwelt Arena in Spreitenbach, which was founded by Walter Schmid, is an information complex with various exhibitions all about sustainability, renewable energy and nature.
The Unwelt Arena, which opened in 2012, was built by WSG AG.
The Umwelt Arena in Spreitenbach, which was founded by Walter Schmid, is an information complex with various exhibitions all about sustainability, renewable energy and nature.
The Unwelt Arena, which opened in 2012, was built by WSG AG.