In the Austrian-speaking parts, the term Sommerfrische (summer retreat) indicates a temporary residence in wooded, mountainous areas, or on the banks of Alpine lakes, where one seeks refreshment far from the city’s dust and heat, in a kind of green Arcadia. In the mid−19th century, the construction of railway lines over the Semmering Pass to Trieste as well as to Salzburg allowed the privileged to reach countryside destinations, something previously possible only for the nobility. The surrounding areas of the Semmering, Salzburg, and, especially, mountain lakes, experienced a founding era—hotels, apartments, and villas with related infrastructure were built in a relatively short time.