Castle of Alenquer (Castelo de Alenquer)

The Castle of Alenquer is a medieval fortress in the town of Alenquer, in the Lisbon District of Portugal, at roughly 39.06° N, 9.01° W. Its story runs from Muslim rule through the Christian conquest to royal ownership and a spell under the Knights Templar.

How did the castle begin?

The area, then called "Alan Cana", was taken by Muslim forces in 714. They established an alcaçova, a fortified citadel, which became the core of the later castle. For centuries the site served as a defensive point in a region that lay between Christian and Muslim territories.

Who captured it in 1148?

In 1148 the fortress fell to Afonso Henriques, the first king of Portugal, and his troops after a siege of about two months. He probably repaired the fortifications and settled his supporters in the town and surrounding lands, tying Alenquer firmly into the growing kingdom.

What role did it play in the Middle Ages?

By the first half of the 13th century the castle counted among the important defensive structures north of Lisbon. In the early 1200s King Sancho I built a palace here and gave it to his daughter Sancha. To settle the resulting dispute, Pope Innocent III placed the castle in the custody of the Knights Templar in 1216.

What changed in the 14th century?

Around the middle of the 14th century the castle became part of the estate of the Queens of Portugal, which is why the town is often linked with queens. The fortress was rebuilt at this time, and a square tower near the river, the Torre da Couraça, was added and connected to the castle. It gave defenders a protected link to the water supply, a vital advantage during a siege.

What to know before visiting

• Location: the town of Alenquer, Lisbon District, inland north of the capital.
• Type: a medieval castle of Muslim origin, later reworked in the Christian period.
• What to look for: surviving walls and the Torre da Couraça, the tower linking the castle to the river.
• Best for: visitors interested in the Reconquista, castles and Portuguese medieval defensive architecture.
• Opening hours and tickets: check current details with the town hall or local tourist office before you travel.

Frequently asked questions

Where is the Castle of Alenquer? In the town of Alenquer, in the municipality of the same name, in Portugal's Lisbon District.

When did Christian forces take the castle? In 1148, after a siege of about two months led by Afonso Henriques, Portugal's first king.

What was the Templars' role? In 1216 Pope Innocent III placed the castle under the Knights Templar's custody to resolve a dispute over its ownership within the royal family.

What was the Torre da Couraça for? This square tower by the river was connected to the castle in the 14th century, giving a defensive route to the water source.

Did queens own the castle? Yes. Around the mid-14th century it became part of the estate of the Queens of Portugal.

Is Alenquer a good day trip from Lisbon? The town lies north of the capital and suits a short trip for anyone interested in medieval history. Plan your route and transport in advance.