Museum Hôtel de Sully in Paris

You're standing at the Hôtel de Sully, at 62 Rue Saint-Antoine, right in the heart of the Marais in Paris. Don't be fooled by the word hôtel. This isn't a place to book a room. It's a private town mansion, built in the Louis XIII style, and you can see it in those stately, balanced façades from the early seventeenth century.