Close to InfoPoint SBB (ShopVille-Zürich Hauptbahnhof), at Station Zürich HB (floor 0). In front of the red kiosk which belongs to SBB.
The tour guide will have a screen in his hand with the names of the tour participants.
The Zurich Opera House is located on Falkenstrasse, on the northeast shore of Lake Zurich. It’s within walking distance of the Old Town area as well the large Zurich Stadelhofen railway station, which connects to many other parts of the city.