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Bonn, Germany
Start in Bonn on Saturday: visit the Beethoven-Haus (birthplace of Ludwig van Beethoven, open 10:00–18:00, buy tickets online at beethoven.de to skip queues, ~€14). Stroll the Altstadt and lunch at Zur Lese or Em Höttche for classic Rhineland cuisine like Sauerbraten and local Kölsch. Don't miss the vibrant Marktplatz and the yellow Baroque Rathaus for photos. Stay at Hotel Kameha Grand Bonn (upscale, great spa) or the more mid-range Maritim Hotel Bonn, both well connected to the main train station.
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Koblenz, Germany
SUNDAY July 12: Take the RegionalBahn from Bonn HBF to Koblenz HBF (~50 min, ~€15 with Deutschlandticket €58/month or day ticket). Koblenz sits at the Deutsches Eck where the Rhine and Moselle rivers meet — iconic photo stop. Take the cable car (Seilbahn, open from 10:00, ~€14 return) up to Festung Ehrenbreitstein fortress, one of the largest preserved fortresses in Europe, with panoramic views and a cultural history museum inside. Afternoon: wine tasting at a Moselle wine bar in the Altstadt — try Weindorf Koblenz (open-air wine village near the Rhine, perfect in summer). Dinner: Restaurant Schiller's (modern German, reserve ahead) or Weinhaus Hubertus for regional Riesling pairings. Stay overnight in Koblenz: Hotel Diehl's or Mercure Hotel Koblenz (both near center, good transit access).
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RĂĽdesheim am Rhein, Germany
MONDAY July 13: Train from Koblenz to Rüdesheim (~45 min via Bingen, RegionalBahn). Rüdesheim is the heart of the UNESCO Rhine Gorge wine region, surrounded by castle ruins and vineyards. Must-do: ride the Rüdesheim Gondola (Seilbahn) up to the Niederwald Monument for breathtaking Rhine valley views (open 9:30–17:30 in summer, ~€9 return — arrive early to avoid queues). Visit Burg Brömserburg, a Rhine castle now housing the Rheingau Wine Museum (open 10:00–18:00, ~€5). The famous Drosselgasse alley is fun for a glass of Riesling Sekt but very touristy — balance it with a visit to a proper Weingut like Weingut Georg Breuer for serious wine tasting (book ahead at georg-breuer.com). Dinner: Restaurant Rüdesheimer Schloss (elegant, regional cuisine, live music sometimes — reserve in advance, ruedesheimer-schloss.com). Stay at Hotel Rüdesheimer Schloss or Lindenwirt — both charming, central, book well in advance for July weekends.
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Frankfurt am Main, Germany
TUESDAY July 14 (departure day): Train from Rüdesheim to Frankfurt HBF (~1h via Wiesbaden, RegionalBahn or IC). Drop luggage at Frankfurt HBF luggage storage (€5-7, Gepäckaufbewahrung at the station). Quick morning: walk the Sachsenhausen Museumsufer (museum riverbank) — the Städel Museum is world-class for art lovers (open from 10:00, städel.com, book online ~€16). Grab lunch at the Kleinmarkthalle indoor market (closes 18:00 on weekdays) for local cheese, meats and a farewell glass of Äppelwoi (Frankfurt apple cider). S-Bahn S8 or S9 from Frankfurt HBF to Frankfurt Airport takes exactly 11 minutes (~€5) — depart HBF by 11:00am latest for a 14:00 flight to allow time for international check-in and security.