States of Austria states of Upper Austria and Lower Austria are essentially equivalent to what were since 1783/84 the two autonomous halves of the Archduchy of Austria, a principality which formed the empire's historic heartland. Salzburg is coterminous with the former Austro-Hungarian Duchy of Salzburg (the former Archbishopric). Similarly, the state of Carinthia descends from the Duchy of Carinthia, the state of Styria descends from the Duchy of Styria, and the state of Tyrol descends from the Princely County of Tyrol; these states had to cede territories to Italy and Yugoslavia when Austria emerged in its present form. Also, the state of Vorarlberg
Vorarlberg energy expenditure. Well-known award-winning architectural projects include the Kunsthaus Bregenz, Vorarlberg museum in Bregenz, Michelehof Hard and Hotel Krone Hittisau. A modern example for Vorarlberg architecture is located in Dornbirn. From 2010 onwards, Vorarlberg had been investing in research on renewable energy sources and energy-efficient houses in order to achieve self-set climate targets. In 2012, the first modular wooden hybrid complex of eight floors was built: The LifeCycle-Tower ONE (LCT ONE). It is 27 meters high and made of wood and concrete. In this architectural design, load-bearing elements are not covered. The benefits of this innovative project are environmental and