A burial chamber built for the dead five thousand years ago stands on the hillside above you.
Last reviewed 1 October 2026 · A three-minute read · 100 BC–2025
The short answer
Sintra's hillside holds a dolmen called Pedras da Granja, raised during the transition from the Neolithic to the Copper Age as a chamber for the dead. Portugal's archaeological survey Endovélico records it as an Anta/Dólmen of the Neo-Calcolítico period, making it the oldest built structure on this ground, predating the Roman villas, the Moorish Castle and the palace below.
Neo-Calcolítico, before history
A dolmen was raised over a chamber for the dead
A short walk north-northeast of where you stand, a cluster of upright stones marks Pedras da Granja. It is a dolmen built during the transition from the Neolithic to the Copper Age. Portugal's archaeological survey, Endovélico, records it as an "Anta/Dólmen" of the Neo-Calcolítico period. It is a burial structure thousands of years older than anything else on this ground.
A dolmen like this was built from large flat stones set on edge. A roofing slab capped them. It was raised over a chamber meant to hold the dead. The people who built it left no name behind. Nothing but the stones themselves. Hands arranged them long before Rome existed. Long before Sintra had a name anyone today would recognize.
What survives is the shape of the thing. It stood through the arrival of Roman farmers. They worked the valley to the southeast at Villa romana de Abóbodas. It stood through the rise of the palaces and chapels that would later fill this district. It stood through the centuries that gave Sintra its churches and country estates. The dolmen needed no empire and no parish to keep it standing. It was already old when all of that began. It has stayed on its hillside while everything around it changed.
The stones outlasted the names of the people who set them.
Roman Empire to Al-Andalus
Roman and Islamic dead were buried on the same slope
The stones at Pedras da Granja were already ancient when people started burying their dead again on this same high ground. The Alto da Vigia necropolis: Roman and Islamic period burials holds graves from two different eras, laid one after another on the hillside. Roman dead went into the ground here first. Centuries later, under Islamic rule in Al-Andalus, more bodies were buried in the same place. Archaeologists only began digging the site in 2008. Nobody had marked it before then.
The necropolis sits close to where you stand, on the high ground above Sintra. It shows the hillside never stopped being chosen for the dead. A dolmen raised in the Copper Age, then a Roman grave, then a Muslim one. Different faiths, different centuries, same slope.
The hill kept being chosen for burial, long after the first builders were forgotten.
1147
The Moorish Castle was surrendered after Lisbon fell
Above the town, on the heights that look down over this valley, stood the Moorish Castle captured in 1147: end of Muslim settlement. Moorish rulers had held it for centuries, guarding the approach to Sintra. In 1147, after Lisbon fell to Christian forces, the castle was handed over. Muslim rule on these heights ended that year. No siege is recorded, just a surrender following the loss of the larger city below.
The hillside had already outlived one age before this happened. The dolmen above you was thousands of years old by 1147. The castle's fall was just the latest change written onto ground that had seen the dead buried and reburied many times over.
1674 to 1683
A king was locked in a palace room until he died
Power changed hands again at the bottom of the hill, inside the National Palace of Sintra. King Afonso VI was declared unfit to rule by his own brother, Pedro, who had him exiled and then locked in a single room. Afonso spent nine years shut in that chamber. He died there in 1683, still confined.
The palace kept him the way the hillside kept its dead. A king, locked away until his death, in the same stretch of ground that once held nameless bodies under stone. Different centuries. Different fates. The same hill, holding on to what was placed in it.
The dolmen still stands on its hillside, outlasting every king, farm, and castle built in its shadow.
Read the ground you are standing on
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Prehistoric
Neolithic and Chalcolithic periods
A chambered Chalcolithic tomb about 5.5 meters across, built alongside an older Neolithic artificial cave, held at least two skeletons at Praia das Maçãs, researched in part by archaeologist Vera Leisner.
About a kilometer northeast, the dolmen of Pedras da Granja is catalogued in Portugal's national archaeological registry as a Neolithic-Chalcolithic chambered tomb.
A few kilometers north, the São Miguel de Odrinhas site holds a Roman villa with mosaic floors, a temple, burials, and thousands of artifacts spanning from the Etruscan period to modern times.
Surface remains of Roman watermills at Moinhos da Torre, and a separate isolated Roman find near Madre de Deus, are both logged in the national archaeological registry within about 2 kilometers.
Excavations since 2008 at Alto da Vigia have uncovered burials from both the Roman period and the later Al-Andalus Islamic era, the oldest dated ground within 500 meters of this spot.
Nineteenth-century digging at the Colaride site turned up Roman human remains, a gold ring, an inscribed bronze ring, and fragments of Roman building material.
The Moorish Castle above Sintra, built by the 8th or 9th century, was surrendered to Portuguese Christian forces in 1147, ending Muslim rule over the hilltop.
Quinta dos Ribafrias, a 16th-century country estate about 2.9 kilometers away, carries Portugal's Immovable Cultural Heritage of Public Interest designation.
The parish church of São João Degolado in Terrugem, with its churchyard, holds Portugal's Monument of Public Interest designation, dated by the register to 1550.
King Afonso VI was exiled by his own brother and spent his final nine years, from 1674 to 1683, shut in a room of the National Palace of Sintra until he died there.
Photographer Francisco Rocchini documented Sintra's streets and palace views in 1868, part of a long run of 19th-century images of the town that survive in European archives.
A fire tore through the eighth floor of a nine-story building in Mira Sintra in November 2025, killing a 76-year-old resident and injuring 12 others including two police officers.
Pedras da Granja is a dolmen, a burial structure of upright stones capped with a roofing slab, built during the transition from the Neolithic to the Copper Age. Portugal's archaeological survey Endovélico records it as an Anta/Dólmen of the Neo-Calcolítico period.
What happened at Alto da Vigia near Sintra?
Alto da Vigia is a necropolis holding Roman burials and, centuries later, Islamic-period burials from the time of Al-Andalus, laid one after another on the same hillside. Archaeologists began excavating the site in 2008.
What happened at the Moorish Castle in 1147?
The Moorish Castle above Sintra was surrendered to Christian forces in 1147, ending Muslim rule over the hilltop, following the fall of Lisbon to Christian forces below.
What happened to King Afonso VI at the National Palace of Sintra?
King Afonso VI was declared unfit to rule by his brother Pedro, who had him exiled and then confined to a single room of the National Palace of Sintra, where he remained locked away for nine years until his death in 1683.
What was here before the Moorish Castle and the palace?
Before the castle and the palace, the hillside held a Copper Age dolmen at Pedras da Granja and, later, a necropolis at Alto da Vigia with Roman and then Islamic-period burials laid on the same ground.