For 10 points, name this German speaking doubly landlocked European nation with capital at Vaduz.
One castle that overlooks this country's capital was built by the Counts of Werdenberg-Sargans (VER-den-berg ZAR-ganz). The Samina River originates in this country and merges with the Ill. Ivoclar Vivadent is a company that makes a product for which this country is the world's largest exporter, false teeth. That company is located in its largest municipality of (*) Schaan. Bounded on the west by the Rhine, it is the only country that is entirely in the Alps. For 10 points, name this German speaking doubly landlocked European nation with capital at Vaduz.
One castle that overlooks this country's capital was built by the Counts of Werdenberg-Sargans (VER-den-berg ZAR-ganz).
Liechtenstein