The Château de Chambord is a masterpiece of the French Renaissance era, blending traditional French medieval forms with classical Italian structures. It's known for its fascinating roofscape, which is often compared to a city skyline, and its double helix staircase, attributed to Leonardo da Vinci. The château also boasts 440 rooms, 365 fireplaces, and 84 staircases, making it the largest château in the Loire Valley. This architectural wonder has been inspiring visitors for centuries with its grandeur and intricate design.