◼ In Paris, Saturday, September 16, by prior arrangement

Guided tours to be booked on ticketing.

Don’t forget your invitation (on your smartphone or printed out) and your ID ; arrive at the Observatory, 10 min, before the time indicated on your ticket)]

Founded in 1667, the Paris Observatory is the cradle of French institutional astronomy, in continuous operation for over 350 years.

You’ll have the opportunity to discover its historic building, one of the major edifices of French classicism, designed by Claude Perrault, the famous architect who created the colonnade of the Louvre.

Among the highlights of the visit (duration 1h) : }

• The panoramic terrace with its breathtaking view of the capital,
• The "Arago" dome, housing a large astronomical telescope dating from 1854,
• The monumental "Cassini" room, engraved with the Paris meridian,
• The grand gallery and its antique instruments,
• The world’s first talking clock,
• The Council Chamber, with its painted ceiling and portraits.

Take pictures !!

We’re counting on you to share your best photos on social networks, mentioning the @Obs_Paris @univ_PSL account.

See you on Saturday !

◼ In Nançay, Sunday, September 17, free admission

Program :

• Lectures,
• Guided tours of the instruments,
• Horse-drawn carriage rides,
• Scientific fun activities.

For further information, visit the Observatoire de radioastronomie de Nançay website or the Journées européennes du patrimoine website.