Start at Sacré-Cœur Basilica in Montmartre, ideally around 8:30–9:00 AM, before the steps and Place du Tertre become crowded. The basilica is free to enter and generally opens from 6:30 AM; dress modestly and keep bags secure around the surrounding viewpoints. Take the funicular from Anvers or Abbesses if you would rather avoid the climb, then allow about an hour for the interior and the broad view over Paris. From there, take Metro line 4 from Barbès–Rochechouart toward Porte de Clignancourt, continuing to Garibaldi or Porte de Saint-Ouen for Marché aux Puces de Saint-Ouen. Allow roughly 25–35 minutes door to door. The market is spread across several sections, with the main stalls usually operating Friday through Monday; arrive around 10:30 AM and spend about 1½ hours browsing, while keeping valuables close and checking opening days for the specific market area.
Head back toward central Paris by Metro line 13 or line 4, allowing around 30–40 minutes to reach Le Marais. Wander through the historic streets around Rue des Rosiers, Rue Vieille-du-Temple, and Rue des Francs-Bourgeois, dipping into courtyards, small galleries, and independent boutiques rather than trying to cover every street. For lunch, stop at L’As du Fallafel on Rue des Rosiers, where a filling falafel sandwich usually costs about €10–20 per person. It is casual and popular, so expect a queue at peak lunchtime; takeaway is often quicker, and the shop may have its own weekly closing day. After lunch, continue strolling through Le Marais toward Place des Vosges, Paris’s oldest planned square. Sit beneath the arcades or on the lawns for 30–45 minutes; the square is free and open throughout the day, and it makes a good pause before the evening.
Make your way to Pont de l’Alma for a Bateaux Mouches cruise on the Seine. From Place des Vosges, the simplest route is usually Metro line 8 from Chemin Vert toward Invalides, then a walk of about 10 minutes, taking roughly 25–30 minutes overall. Try to arrive 20–30 minutes before departure, especially on a September weekend; cruises generally last about an hour and cost approximately €15–25 per person, with schedules varying by season. Choose an open-deck seat for the best views of the illuminated riverfront, but bring a light layer—the breeze on the Seine is noticeably cooler after sunset.
After arriving at Lyon Part-Dieu, take Metro B toward Gare d’Oullins, change at Saxe–Gambetta for Metro D, and get off at Vieux Lyon–Cathédrale Saint-Jean—allow roughly 25 minutes. Spend the late morning wandering Vieux Lyon, where Rue Saint-Jean and Rue du Bœuf are lined with honey-colored Renaissance buildings, small courtyards, and discreet traboules (passageways through buildings). Many traboules are open during the day but are working residential entrances, so enter quietly and never force a locked door. Allow about two hours; the cathedral area is free, while a few private museums charge around €8–€12.
From Vieux Lyon, walk to the nearby Fourvière funicular and ride up to Fourvière—the easiest option, included in the TCL network fare, with a single journey costing roughly €2. Take an hour at the Basilica of Notre-Dame de Fourvière, whose ornate interior is free to visit, then step onto the terrace for one of Lyon’s finest views over the Rhône, Saône, and Presqu’île. Return by funicular and use Metro D to Part-Dieu for lunch at Les Halles de Lyon Paul Bocuse. This covered food market is ideal for grazing: look for regional cheeses, oysters, charcuterie, praline pastries, and Lyon specialties such as quenelles. Individual tastings are inexpensive, while a generous lunch with wine usually comes to €20–€45 per person; check Sunday and late-afternoon closing times, as many stalls finish service around 3–4 PM.
After lunch, take Metro B from Part-Dieu toward Charpennes, then change for Metro A to Masséna or Foch, followed by a short walk to Parc de la Tête d’Or. Spend the final 90 minutes beside the lake, through the rose gardens, and around the botanical greenhouses; the park is free and generally open from early morning until evening, with seasonal hours posted at the entrances. Return to Lyon Part-Dieu by tram or Metro B with plenty of margin for your evening TGV—aim to be at the station 20–30 minutes before departure. A train around 6:30–7:30 PM gives you roughly two hours back to Paris Gare de Lyon, plus time for your onward Metro, taxi, or hotel transfer.
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