Aragonese Castle

Start with the sound underfoot. As you cross the long stone causeway, your steps ring on old paving, and the sea moves quietly on both sides. Small boats knock against their moorings. Ahead, a dark rock rises straight out of the water, and on top of it sits a cluster of walls, domes and towers. The air smells of salt and warm stone. This is the Aragonese Castle, and the walk across is the first part of its story.

The rock itself is volcanic. It formed from the same underground forces that shaped all of Ischia, an island built by eruptions over many thousands of years. The islet climbs more than a hundred metres above the sea, with steep sides that drop almost straight into the water. That shape explains everything that came later. A rock like this is hard to attack and easy to watch from. For many centuries, people looked at it and saw safety.

The earliest fortress here is usually linked to the Greeks. Ancient sources say that Hiero, the ruler of Syracuse in Sicily, built a stronghold on the rock in the fifth century before Christ. He had just defeated the Etruscans in a sea battle near Cumae, on the mainland across the bay. The fort helped him control these waters. Over the following centuries, Romans, then other powers, held the rock in turn. Each one added walls, or rebuilt what the last had lost.

The name you hear today comes from a later chapter. In the fifteenth century, King Alfonso of Aragon took control of Naples and its islands. Aragon was a Spanish kingdom, and its rulers reshaped this rock into a serious fortress. They strengthened the walls. And they built the causeway you just walked across. Before that, the rock was reached by a wooden bridge or by boat. The stone link turned the castle and the shore into one place, and the town at its base is still called Ischia Ponte, which simply means Ischia Bridge.

Here is a detail many visitors miss. The castle was not only a fortress. For long periods it was a town. When pirates raided the coast, families from all over Ischia fled up here behind the walls. After an eruption in the early fourteenth century destroyed farmland and homes on the main island, many people moved onto the rock for good. At its height, the islet held houses, gardens, churches, a cathedral and convents. Thousands of people lived on this small piece of stone.

As you climb, you can choose the old path or a lift cut through the rock. The path is worth it if your legs allow. It winds up through tunnels and ramps, past walls patched again and again over the centuries. You can see where different stones meet, where newer masonry fills older gaps. Every few turns, a gap in the wall frames the sea, the bridge, and the pastel houses of the village below.

The castle also has a literary story. In the early sixteenth century, the poet Vittoria Colonna lived here. She married here, into the powerful d'Avalos family, and the castle became a meeting place for writers and thinkers of the Italian Renaissance. Colonna became one of the most respected poets of her time. She was also a close friend of Michelangelo, who wrote poems and letters to her. It is strange to imagine this rough fortress as a place of verse and conversation... but for a time, it was.

Now for the part of the castle that surprises almost everyone. Near the top stands the convent of the Poor Clares, an order of enclosed nuns. Beneath it is a crypt with a very unusual cemetery. When a nun died, her body was placed on a stone seat carved into the wall. The body stayed there and slowly dried and decayed. The living sisters came down to pray beside them. It was a daily reminder of death and of the fragility of the body. When you stand in that low, quiet room and see the rows of empty seats, the meaning feels very direct.

Not far away are the ruins of the cathedral. Its roof is gone. In the early nineteenth century, during the Napoleonic Wars, British ships bombarded the castle, which was then held by French forces. The cathedral was badly damaged and never fully rebuilt. Today, sky fills the space where the vault once stood. You can still find fragments of painted plaster and decoration on the remaining walls. Light falls across them in a way that changes through the day.

After the bombardment, the town on the rock slowly emptied. People moved back to the main island, where life was easier and safer. In the nineteenth century, the castle took on a darker role. The Bourbon rulers of Naples used it as a prison, and political prisoners were held here during the struggles that led to Italian unification. So the same walls that once protected families later locked people in. Later still, in the early twentieth century, the castle passed into private hands, and the owners began opening it to visitors.

As you walk the upper terraces, take time with the views. To one side lies the open sea. On a clear day you can see the island of Procida, low and colourful, and beyond it the outline of the mainland coast. Look down at the bay below the castle. The water there is often very clear, and you can see rocks and sand through it. Small churches and gardens sit along the paths, many with olive trees, vines and flowering plants growing between old stones.

The castle today is a mix of ruin, garden and museum. Some rooms hold exhibitions and art. Others are simply old spaces, open to the wind. There are cafés and terraces where you can sit and rest. In summer, the heat on the stone can be strong, and shade becomes precious. In the softer seasons, the paths are quieter and the light is gentler on the walls.

Before you leave, stop for a moment on one of the high terraces and look back along the causeway. Notice how thin that line of stone looks from up here, and how much depended on it. Below, the village goes on with its day. Fishing boats come and go. Cafés fill and empty. As you walk back across the bridge, listen again to your footsteps on the paving, and to the sea on either side... the same sounds that greeted everyone who crossed here before you.