The Opera Garnier is worth visiting if you like grand 19th-century architecture and don't mind crowds. Expect an opulent mix of marble staircases, gilded ceilings, chandeliers, and the famous auditorium with its Marc Chagall ceiling. The self-guided route takes you through the public areas including the Grand Foyer and Rotonde; you won't access the stage or backstage unless you book a guided tour. Most people spend 45-90 minutes inside. It's a beautiful but busy tourist site rather than a quiet cultural experience.
Best time is off-season (November-March) on weekday mornings when crowds are lighter. In summer and school holidays the entrance hall gets packed. Expect to pay around €12-18 for a basic self-guided ticket; guided tours run €25-35 and sell out faster. Audio guides are available but many find them dry.
Tip: Skip the official audio guide and just wander with the free paper map; the building speaks for itself. If you're short on time or energy, stick to self-guided and avoid peak afternoon slots. Combine it with a walk through nearby Galeries Lafayette for views from their rooftop, but don't try to do both in the same morning if you want a relaxed pace.
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