Castle of Silves

Put your hand flat against the wall beside you. The stone is warm, slightly rough, and the colour of dried clay. It is a deep rusty red that turns almost orange when the afternoon sun hits it. This is the red sandstone of Silves, and it gives the whole hilltop its glow. Around you, swallows cut low over the battlements. Below, the roofs of the town step down towards the river. You are standing in what was once one of the most important fortresses in the western Islamic world.

That is the first surprise for many visitors. Today Silves is a quiet inland town in the Algarve, Portugal's southern coast. A thousand years ago it was something else entirely. Under Muslim rule the city was known as Xelb, or Shilb. For a time it served as the capital of this whole region. Arab writers of the period described it as a handsome city of gardens, markets and poets. Some even compared it favourably with Lisbon. The castle you are walking through was its crowning fortress.

The walls around you follow the shape of the hilltop. They are built in a rough polygon, with square towers set along their length. Walk the ramparts and you can see why this spot was chosen. The hill commands the valley in every direction. To the south, the land opens towards the coast. To the north rise the low, green hills of the Serra de Monchique. Any army approaching Silves would have been seen long before it arrived.

Now look down towards the river. That is the Arade. Today it looks gentle, almost sleepy. In the medieval period it was much deeper and more navigable. Ships could sail from the Atlantic all the way up to the town walls. This made Silves a river port, linked to trade routes across the Mediterranean and beyond. Over the centuries, silt built up and the river grew shallower. As the water retreated, so did the town's importance.

In the eleventh century, Silves had a famous governor. His name was al-Mutamid ibn Abbad. He later became ruler of Seville, one of the great kingdoms of Muslim Spain. But he is remembered above all as a poet. In his verses he wrote with longing about Silves and its palaces. His poems are still read today. When you hear about the elegance of old Xelb, much of that picture comes from words like his.

The castle's peaceful mood hides a violent past. In 1189, King Sancho the First of Portugal laid siege to Silves. He was helped by crusaders from northern Europe, who were sailing towards the Holy Land. Accounts of the siege describe a long, hard struggle, with the defenders suffering badly from thirst. In the end the city fell. Yet the victory did not last. Within a couple of years, the Almohads, a North African Muslim dynasty, took Silves back.

The final Christian conquest came in the thirteenth century. After that, Silves became part of the Kingdom of Portugal for good. The town kept its bishop and its cathedral for several centuries more. Slowly, though, power and trade moved elsewhere along the coast. Earthquakes, including the great Lisbon earthquake of 1755, damaged buildings across the region. By the modern era, the old capital had become a small country town.

As you walk inside the walls, look for the cisterns. Water was everything in a hilltop fortress. One large vaulted cistern was built to store rainwater for the garrison and the townspeople during a siege. Another, smaller cistern carries a romantic name: the Cistern of the Moorish Girl. Locals say an enchanted Moorish maiden lives in its depths. According to one popular tale, she can be seen on certain magical nights, waiting for someone to break her spell.

That story is folklore, of course. But it belongs to a wider tradition across southern Portugal. Many old wells, rocks and castles here have their own enchanted Moorish girl. These legends show how strongly the memory of the Islamic period stayed in local imagination. Centuries after the last Muslim ruler left, people were still telling stories about the ones who came before.

Look closely at the open ground inside the walls. Archaeologists have excavated parts of it in recent decades. They uncovered the foundations of houses, streets and a palace complex from the Islamic period. Some of these remains are marked out at ground level. They are easy to miss if you only look at the towers. Try to picture this space full of rooms, courtyards and people, rather than empty and grassy.

Much of what you see today was shaped by twentieth-century restoration. Some towers and battlements were rebuilt in that period, so not every stone here is medieval. You may notice small differences in colour and finish between older and newer sections. Some blocks are weathered and soft at the edges. Others are cleaner and sharper. Running your eye along the wall is a little like reading a timeline of repairs.

Near the entrance stands a statue of King Sancho the First, sword in hand. He is the man who first took the city in 1189. Just below the castle, you can see Silves Cathedral, built from the same red stone. It was raised on the site of an earlier mosque, a common pattern after the Christian conquest. Castle and cathedral together tell the story of a city that changed hands, and faiths, more than once.

Before you leave, find a quiet corner of the ramparts and pause. Listen for the birds, the distant traffic, perhaps church bells from the town below. Notice how the red walls shift colour as the light moves. Then, as you walk back down through the narrow streets, look at the doorways and steps. You will see the same red stone again and again, carrying this old fortress quietly into everyday life.