In the late nineteenth century Archduke Albert of Austria defined Arco as a natural sanatorium thanks to its pure air. Shortly afterwards many health centers arose in Arco, where baths, inhalations, heliotherapy and further health spa treatments are still practiced today. The Austrian domination definitely left its distinctive mark to this town and its parks, gardens, buildings and well-designed art nouveau palaces. In the old town you can see a series of remarkable worked stone portals. Moreover, in the Arboreto you can admire plants from all over the world along a route that leads to the public gardens and a romantic walk amongst olive groves on the way to the Medieval Castle, built by the Counts of Arco on the summit of a rocky peak overlooking the whole Sarca Valley…