Shadow Clock: The Zürich Assignment

An operative photographed a dead drop location in Zürich at 14:37 local time on March 21st, 2024. The photo shows a distinctive bronze statue of a seated figure on a stone pedestal, surrounded by historic buildings with ornate facades. A church spire is visible in the background to the northeast. The shadow cast by the statue measures approximately 1.2 meters long, extending toward 298° (WNW). The pedestal has a partially visible inscription: '...FRIED KELLER 1819-1890'. Street-level context: cobblestone plaza, tram tracks running north-south on the western edge, a fountain 30 meters to the south. Building facade colors: cream and pale yellow. One building has a hanging sign with a golden pretzel symbol. The operative's last transmission: 'Package hidden 15 paces north of the poet's feet.' Intelligence confirms Zürich's financial district is NOT the location - this is Old Town territory. Cross-reference: Swiss cultural monuments database lists this statue's installation year as 1889. Satellite imagery shows the plaza is roughly triangular, bordered by Spiegelgasse to the west. Your task: identify the exact plaza name where this statue stands. The plaza has a specific German name used on all official maps since 1898. Format your answer as the plaza's official name, lowercase, replacing spaces and umlauts: ü→ue, ö→oe, ä→ae.