You can walk straight into one of Paris’s oldest churches for free and see the painted interior, choir, and bell tower exterior without booking anything.
- Best for: history fans, budget travelers, short stops
- Duration: 20–30 min
- Combine this with: Place de Furstemberg — 3 minutes away, and the square gives you a quiet pause after the boulevard. Or pair with Café de Flore — 2 minutes away if you want one paid stop after a free sight.









