Across the globe, spies gather in inconspicuous dens to meet contacts and hold discreet conversations. This week, Intelligence Online explores the area around Vienna's Grand Hotel Wien, a popular spot for foreign diplomats, spies, journalists and industry figures wanting to keep their affairs private.
Vienna has often been called the spy capital of Europe and the region's intelligence services certainly keep a very closely watch on the city. It is filled with cafés where foreign diplomats and international figures can meet tucked away from prying eyes, especially in the vicinity of its Grand Hotel Wien.
The luxury establishment frequently played host
