Château d'Azay-le-Rideau, Renaissance castle in Azay-le-Rideau, France

The Château d'Azay-le-Rideau stands on an island in the Indre, its pale limestone walls rising straight from the water on a flat stone base. The steep dark slate roof carries ornate dormers and slender spires, and a round turret with a conical roof marks the corner, with a smaller round tower further along. Rows of rectangular windows, some with red wooden shutters, are set across the facade, and carved stone decorates the upper sections. Only the south and west wings were built, giving the plan its L-shape.

Gilles Berthelot, treasurer of France and mayor of Tours, built the present château from 1518 on the site of a medieval fortress burned in 1418. Accused of embezzlement after his cousin Jacques de Beaune was executed, he fled in 1527 and the unfinished building was confiscated in 1528. Francis I gave it to Antoine Raffin in 1535, and only the south and west wings were ever completed, leaving the L-shaped plan.

The château's name recalls its medieval past: after the 1418 burning, the town was called Azay-le-Brûlé until the 18th century. Inside, the monumental staircase displays medallions and royal insignia that were covered during the Revolution and restored in the 19th century. The library and drawing room keep their carved wood panelling, installed around 1825–1826.

The château stands on an island in the Indre, reached from the town by a bridge; the visit runs through the south and west wings, the only two built, so the plan forms an L. The monumental staircase occupies the central bay of the south facade, and its dormer is set back from the others. The grounds include a park, moats, a chapel, outbuildings and a water mirror.

The central honor staircase blends Italian Renaissance and French architectural styles in an unusual way. This combination of two design traditions makes the staircase a noteworthy feature throughout the castle.