Vienna

Contemporary Art Tower

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Dannebergplatz Barmherzigeng, U3 Rochusstrasse,
Vienna,

Austria,
1030 .

Downtown, the Contemporary Art Tower, a World War II anti-aircraft tower with concrete walls thicker than most sidewalks, has been converted to a showroom for projects by James Turrell and Jenny Holzer, among others. Minimal fluorescent lighting and nonexistent heating and cooling systems keep gallery spaces eco-friendly.

Open Sundays, May through November