Montlhéry

This medieval tower, offering a breathtaking panoramic view of Essonne, was once used to measure the speed of light.

Perched atop a 30-meter-high hill, the Montlhéry Tower offers a breathtaking panoramic view of Essonne and the Île-de-France region. This historic medieval relic, officially listed as a Monument Historique, once served as a laboratory for some of the greatest scientists of the 19th century. Whether you're interested in its history, planning a visit, or just taking a leisurely walk, here's everything you need to know.

The 2025 Christmas Market in Montlhéry (91): Santa Claus, concerts, and magical strolls

The Montlhéry Christmas Market is coming this weekend, from November 28 to 30, 2025, at Parc de la Souche in Essonne (91)! For this second edition, the city promises a magical atmosphere where artisans, enchanting entertainment, and gourmet treats compete for your attention.

Did you know? A century-old autodrome track is located in Essonne.

Near the towns of Linas and Monlhéry, in the Essonne department, you'll find an autodrome track, designed for motor racing and car-related events.

Immerse yourself in the life of the great lords of the Middle Ages at the Fête médiévale de Montlhéry (91)

The town of Montlhéry, famous for its fortified castle and imposing Tower, high above the village, organizes a weekend of events, shows and markets every year... in September.

100 years of the Linas-Montlhéry Autodrome (91): vintage car parade, car race and entertainment

Since its creation in 1924, the Linas-Montlhéry autodrome has hosted numerous motor races (and with them, many records too): in 2024, the emblematic Essonne motor racing circuit celebrates its 100th anniversary with a brand-new event, on the weekend of October 12 and 13, 2024.

Mysterland, the indoor adventure playground in Montlhery (91)

In Montlhery, in the Essonne department, Mysterland is the indoor playground that welcomes you and your children all year round, for hours of family fun!