What region whose name means "Estate of the Salt Chamber" has Austria's third largest lake?
Attersee (lake) Attersee, also known as Kammersee, English sometimes Lake Atter, is the largest lake of the Salzkammergut region in the Austrian state of Upper Austria. It is Austria's third largest lake by area, surpassed only by Lake Constance and Lake Neusiedl, which, however, both extend beyond national borders.
Upper Hungary Upper Hungary is the usual English translation of Felvidék (lit.: "Upland"), the Hungarian term for the area that was historically the northern part of the Kingdom of Hungary, now mostly present-day Slovakia. The region has also been called "Felső-Magyarország" (lit: "Upper Hungary", Slovak: "Horné Uhorsko" ).