Luxembourg Palace stands as a remarkable piece of Parisian history, open to visitors only with advance reservation and just one Saturday each month. Built in the early 1600s for Marie de Medici, this lavishly decorated palace now serves as the seat of the French Senate. Its grand halls and ornate details offer a rare glimpse into a world typically hidden from the public eye, making it a unique destination for those curious about French monuments or the workings of government in France.
While the palace itself is usually off-limits, the surrounding Luxembourg Garden welcomes visitors all year long. This vast green space offers much more than just beautiful scenery. The historic Medici Fountain provides a peaceful retreat, while families flock to the popular children's playground. One of the garden’s most charming traditions is the rental of vintage toy boats; children delight in pushing these little vessels across the Grand Bassin duck pond, a beloved activity that has continued for more than 90 years.
Source - https://en.wikipedia.org/wiki/Luxembourg_Palace