Frankfurt in 3 days: Römerberg (Römer city hall since 1405, Holy Roman Emperor elections — most photographed German city square, most famous German Christmas market location), Goethe House birthplace (August 28, 1749 — Faust + Werther — most famous German writer), Maintower 200m panorama (€9), banking skyline (ECB 2015, Commerzbank 259m Norman Foster, Deutsche Bank twins — most skyscraper-dense Continental European city = "Mainhattan"), Sachsenhausen Ebbelwoi apple wine in Bembel grey stoneware pitcher (most distinctively Frankfurt single drinking tradition), Städel Museum (Rembrandt "Blinding of Samson" 1636, Vermeer "The Geographer", Botticelli "Ideal Portrait" — most important single Frankfurt art museum — €16), Deutsches Filmmuseum, Museumsufer 12 museums 2km, Kaiserdom "Emperor Cathedral" (10 Holy Roman Emperor elections), Rheingau Riesling wine day trip (Schloss Johannisberg — oldest Riesling estate), Eiserner Steg love-lock bridge 1869, Grüne Soße seven-herb Frankfurt sauce (Goethe's favourite) & farewell Mainhattan night skyline view.