Step back in time in the Vauban tower, 2nd oldest lighthouse in France

It was designed to serve as a sea wall (27 metres) and as a surveillance point for maritime traffic. At night, its light was fuelled by fish oil and then charcoal.
Replaced by the Baleines lighthouse in 1854, it was listed as a Historic Monument in 1904!

Visiting tips, least busy times (source GooglePopularTime)
The Baleines lighthouse is the most visited site on the Ile de Ré. Peak visitor numbers are generally recorded between 2pm and 4pm.
For greater peace and quiet and less waiting time, it's best to visit before 12pm, arriving around 10.30am-11am or after 5pm.
Tip: visit in the early hours of the morning, when the park opens, to take advantage of the colours and freshness of the morning - an invigorating effect guaranteed!