The name "Châtelet" refers to the stronghold, the Grand Châtelet, that guarded the northern end of the Pont au Change, containing the offices of the prévôt de Paris and a number of prisons, until it was demolished from 1802 to 1810.[1]
At the square's center is the Fontaine du Palmier, designed in 1806 by architect and engineer François-Jean Bralle (1750-1832) to celebrate French victories in battle. It has a circular basin, 6 m (20 ft) in diameter, from which a column rises in the form of a palm tree's trunk 18 m (59 ft) tall. The palm trunk is surmounted by a gilded figure of the goddess, Victory, holding a laurel wreath in each upraised hand; the goddess figure stands on a base ornamented with bas-relief eagles. The gilded finial is by sculptor Louis-Simon Boizot.