Citadel of Lille, Lille, France

The Citadel of Lille is a pentagonal citadel built between 1667-1670. It is one of the most notable citadels designed by Sébastien Le Prestre de Vauban, the famous military engineer. It is remarkable for its size, the quality of the architecture, and the state of preservation today.

This 'Queen of Citadels' is the matrix of most citadels designed by Vauban. Established on the border of Flanders, it was part of a double-line of fortified towns between Gravelines, Dunkirk and Maubeuge-Rocroi. It delineated the famous Pré Carré ('square field') conceived by Vauban comprising 28 fortified cities. From Lille, Vauban supervised the construction of the many citadels and canals of the North, which controlled the border between France and Belgium.

Lille was taken from Spain by French troops in August 1667, and Louis XIV immediately ordered the construction of a fortress. Louis Nicolas de Clerville and Vauban proposed plans. Vauban are those which were chosen by the King. Work was started in 1668 under the direction of Lille"s master mason Simon Vollant. In 1671, the citadel was operational while Vauban continued to shape the city by constructing, a few steps away, a new neighborhood around the Rue Royale. The design of the citadel follows a simple but very effective idea: not one of its walls can be approached by the enemy without that being under fire from a nearby wall.

The citadel was constructed to the west of the city on marshland at the junction of the rivers Deûle and Bucquet. This allowed the use of swamp water and mud as a natural defense to make conditions more difficult for any possible enemy besieging the citadel. Through a system of locks and water gates, 1,700 hectares around the citadel could be flooded to a depth of 55 cm. A wide esplanade interrupted the plans, connecting the fort to the city. In 1750, a canal along the esplanade was drilled according to the plans drawn up by Vauban.

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Castles and fortifications in France

Walls of Constantinople

The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.

Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.

Nick Babyak (4 years ago)
You can't go into the fort since it's an active military base, but it's lovely to walk around the park bordering the fort

Pom Ph. (4 years ago)
No ticket enter to visit. Really good park. It is impressive for me.

Lena Ras (5 years ago)
A nice place and park for a walk or a bicycle ride

Alex Blot (5 years ago)
Did not imagine a citadelle was in Lille! This city, 1h30 from Brussels, worth a visit. A couple of days. I assure you won't regret it.

Nasar Alam (6 years ago)
I wanted to see it but its not for public access. :(

Citadel of Lille

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