From France Today: Inspired by the stunning stained-glass windows of its famed 13th-century cathedral, every night from April through mid-September the city of Chartres illuminates over a score of its principal buildings, squares, bridges and streets in a blazing swirl of brilliant colors orchestrated by lighting expert and scenographer Xavier de Richemont.

Some of the light-show projections are still, some in motion, many are accompanied by music and other sound effects, and most are astonishing. Among the must-see sights in their luminous glory are the cathedral, the Beaux-Arts museum, Saint Pierre and Saint André churches, the 19th-century theater, the Place des Halles and the 20th-century Médiathèque.

The 29 sites are scattered throughout the town’s historic downtown, and the free event starts at nightfall and goes until 1 am. Walking tour maps showing the suggested route are available at the tourist office; you can also visit the sites on Le Petit Train de Chartres for a fee.

Chartres en Lumières Every night from April 21 to September 15. www.chartresenlumieres.com