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Origin and history

The Gros Horloge is an emblematic monument of Rouen, combining a 14th-XV century belfry and a Renaissance arch surmounted by an astronomical clock of the 14th century. Ranked in 1862, it symbolizes the struggle for influence between civil and religious powers, his watchmaking mechanism (1389) being one of the oldest in France. The belfry, rebuilt in 1398 after the Harelle revolt, has Gothic bays and a modern classical dome, replacing a frame arrow.

The current clock, installed between 1527 and 1529 on a Renaissance arch replacing the Massacre door, has two dials of 2.50 m diameter. These display a golden sun, a lamb-shaped needle, lunar phases, and an allegorical semainier (moon, Mars, Mercury, etc.). Restored several times (1889-1893, 1997-2006), it has been operating with electricity since the 1920s, although its mechanical mechanism remains intact. Closed in 2023 for restoration, the site reopened in March 2024.

The Renaissance arch, richly carved, bears the arms of Rouen (pascal lamb on red background) and angels, one of them with the inverted head, a sign of protest by the workers. The upper half floors were restored in 1892 with a lead frieze. Close by, an 18th-century fountain (classified in 1889) depicts the love of Alpheus and Arethuse, while a 16th-century shop, an old watchmaker's lodge, now serves as an entrance to the museum.

The Gros Horloge Museum, open to the public, exhibits the mechanism, the bells, and offers a panorama of Notre Dame Cathedral. Two postage stamps (1976, 2014) immortalized this monument, represented as early as 1526 in the Book of Fountains of Jacques Le Lieur. Degradations (tags in 2023, xylophages) required urgent work in 2023-2025.

The belfry also houses a symbol of civil resistance: rebuilt in 1398 under the pretext of a "clock tower" to circumvent the post-Harelle ban, it embodies urban autonomy against the royal power. The bells, opposed to church bell towers, mark the rivalry between civil and religious times. The site, restored and highlighted in 2003, attracts 30,000 annual visitors.

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