Uncover the Hôtel-Dieu, France
Just seconds away from Notre-Dame Cathedral is a blue door. You could easily miss it, but what lies beyond is one of Paris’s best-kept secrets: the Hôtel-Dieu complex, the city’s oldest working hospital.
Slip through the sliding doors, ask for directions to the courtyard, and you’ll find a piano and Hausmanian architecture – the ideal cure to the city’s crowds. But remember to be quiet – the patients don’t want the word getting out.