Oud Sluis

Sluis (Dutch: [slœys] ; Zeelandic: Sluus [slys]; French: Écluse) is a town and municipality located in the west of Zeelandic Flanders, in the south-western Dutch province of Zeeland. The current incarnation of the municipality has existed since 1 January 2003. The former municipalities of Oostburg and Sluis-Aardenburg merged on that date. The latter of these two municipalities was formed from a merger between the previous municipality named Sluis and the former municipality of Aardenburg in 1995.

The siege of Sluis (1604), also known as the Sluis campaign or the Battle of the Oostburg Line, was a series of military actions that took place during the Eighty Years' War and the Anglo–Spanish War from 19 May to 19 August 1604. A States and English army under Prince Maurice of Orange and Horace Vere respectively crossed the Scheldt estuary and advanced on land taking Cadzand, Aardenburg, and IJzendijke in the Spanish Netherlands. This soon led to the culmination of the siege of the Spanish-held inland port of Sluis.Initially it was hoped that with Ostend under siege for three years by the Spanish, an attempted relief by Maurice's army could be achieved. Even though Ostend would finally fall into the hands of the Spanish, Sluis, an important stronghold itself, was eventually captured after tough fighting which included the defeat of a Spanish relief force under Ambrogio Spinola and Luis de Velasco.

Sluis-Aardenburg was a municipality in the province of Zeeland, in the south-western part of the Netherlands. It was created from a merger of Sluis and Aardenburg in 1995, and it merged with the municipality of Oostburg, on 1 January 2003, to form the new municipality of Sluis. Sluis-Aardenburg covered an area of 83.48 km², of which 0.89 km² was water. The municipality comprised the following towns, villages and townships: Aardenburg Draaiburg Eede Heille Retranchement Sint Anna ter Muiden Sint Kruis Sluis Terhofstede Zwindorp

Sint Anna ter Muiden is a small city in the province of Zeeland, Netherlands. It is administratively a part of municipality of Sluis, and the town of Sluis lies about 1 km east. It is located on the westernmost point of the Netherlands (excluding the kingdom's other countries and its special municipalities). It has a population of 50 (as of 2001). Sint Anna ter Muiden was granted city rights in 1242 by the counts of Flanders, Thomas II of Savoy and Jeanne of Flanders. This makes it today the second smallest place in the Netherlands that bears this traditional designation (after Staverden with just 40 inhabitants). Sint Anna ter Muiden was a separate municipality until 1880, when it was merged with Sluis. Prior to 1 January 2003, it was in the former municipality of Sluis-Aardenburg.

The Battle of Sluis was a naval battle during the Eighty Years' War in which a Spanish squadron commanded by the Italian captain Federico Spinola tried to break through a blockade of Sluis by Dutch ships under the command of Joos de Moor. After about two hours of fighting the heavily damaged Spanish ships returned to Sluis; Federico Spinola was killed during the action.

Retranchement is a village in the Dutch province of Zeeland. It is located on the Belgian border, about 9 km northwest of Oostburg, in the municipality of Sluis.

Lapscheure is a town in Damme, a municipality in the province of West Flanders, Belgium.

The Battle of Sluys (; Dutch pronunciation: [slœys]), also called the Battle of l'Écluse, was a naval battle fought on 24 June 1340 between England and France. It took place in the roadstead of the port of Sluys (French Écluse), on a since silted-up inlet between Zeeland and West Flanders. The English fleet of 120–150 ships was led by Edward III of England and the 230-strong French fleet by the Breton knight Hugues Quiéret, Admiral of France, and Nicolas Béhuchet, Constable of France. The battle was one of the opening engagements of the Hundred Years' War. Edward sailed from the River Orwell on 22 June and encountered the French blocking his way to Sluys harbour. The French had bound their ships into three lines, forming large floating fighting platforms. The English fleet spent some time manoeuvring to gain the advantage of wind and tide. During this delay the French ships were driven to the east of their starting positions and became entangled with each other. Béhuchet and Quiéret ordered the ships to be separated and the fleet attempted to move back to the west, against the wind and the tide. While the French were in this disorganised state, the English attacked. The English were able to manoeuvre against the French and defeat them in detail, capturing most of their ships. The French lost 16,000–20,000 men. The battle gave the English fleet naval supremacy in the English Channel. However, they were unable to take strategic advantage of this, and their success barely interrupted French raids on English territories and shipping. Operationally, the battle allowed the English army to land and to then besiege the French town of Tournai, albeit unsuccessfully.

Heille is a hamlet in the Dutch province of Zeeland. It is located on the Belgium border, about 2 km west of Aardenburg in the municipality of Sluis. Heille is not a statistical entity, and the postal authorities have placed it under Sluis.Heille was a separate municipality until 1880.

Knokke-Zoute Airfield is a former airfield, located 5 km east of Knokke-Heist in West Flanders, Belgium. It was closed in 1960 and is now in agricultural use.