The Observatory Garden of Paris was laid out in 1977 on a 5 500 m² plot just south of the historic Observatory (built between 1667–1672 by Claude Perrault). Served by metro line 6 (Saint‑Jacques station), metro/RER interchange at Denfert‑Rochereau (lines 4, 6, RER B), and several bus routes (38, 59, 64, 68, Orlybus), this public park attracts walkers, families, students and astronomy enthusiasts.

Featuring around 100 trees—zelkova, hazel, and other species—flower beds and a 900 m² lawn, it offers a green oasis amidst urban Paris. Since 1992, the Paris meridian has been marked on the ground here, honoring astronomer François Arago. At the entrance on boulevard Arago stands a modern statue by Wim Delvoye (2017), replacing the original bronze melted down during WWII.

One corner features the Carpeaux fountain, with four continental figures around a zodiacal globe, aligned with the meridian axis. Benches invite visitors to admire the Observatory’s dome—still active scientifically but not open to tours—and to enjoy a peaceful urban retreat.

The garden’s tranquil atmosphere is perfect for reading, picnicking, or unwinding after visits to the Panthéon or the Latin Quarter. It appeals to locals, tourists seeking an off-the-beaten-track spot, science students, and families.

Fun fact: the original Arago statue from 1893 was melted under the Occupation; the new monument reinstates a historical and artistic continuity.