Buildings and structures completed in the 4th millennium BC

Harappa () is an archaeological site in Punjab, Pakistan, about west of Sahiwal, that takes its name from a modern village near the former course of the Ravi River. The Ravi now runs to the north.

Ġgantija (; "place of giants") is a megalithic temple complex from the Neolithic era (–2500 BC), on the Mediterranean island of Gozo in Malta. The Ġgantija temples are the earliest of the Megalithic Temples of Malta and are older than the pyramids of Egypt. Their makers erected the two Ġgantija temples during the Neolithic, which makes these temples more than 5,500 years old and the world's second-oldest existing manmade religious structures after Göbekli Tepe in present-day Turkey. Together with other similar structures, these have been designated a UNESCO World Heritage Site, the Megalithic

Newgrange () is a prehistoric monument in County Meath in Ireland, placed on a rise overlooking the River Boyne, west of the town of Drogheda. It is an exceptionally grand passage tomb built during the Neolithic Period, around 3100 BC, making it older than Stonehenge and the Egyptian pyramids. Newgrange is the main monument in the Brú na Bóinne complex, a World Heritage Site that also includes the passage tombs of Knowth and Dowth, as well as other henges, burial mounds and standing stones.

archaeological site

Mnajdra () is a megalithic temple complex found on the southern coast of the Mediterranean island of Malta. Mnajdra is approximately from the Ħaġar Qim megalithic complex. Mnajdra was built around the fourth millennium BCE; the Megalithic Temples of Malta are among the most ancient religious sites on Earth, described by the World Heritage Sites committee as "unique architectural masterpieces." In 1992, UNESCO recognized the Mnajdra complex and four other Maltese megalithic structures as UNESCO World Heritage Sites. In 2009, work was completed on a protective tent.

megalithic temple complex

henge in Orkney Islands, Scotland, UK

dolmen located in Málaga, Spain

Knowth (; ) is a prehistoric tomb overlooking the River Boyne in County Meath, Ireland. It comprises a large passage tomb surrounded by 17 smaller tombs, built during the Neolithic era around 3200 BC. It contains the largest assemblage of megalithic art in Europe. Knowth is part of the Brú na Bóinne complex, a World Heritage Site that also includes the similar passage tombs of Newgrange and Dowth.

dolmen located in Andalusia, Spain

Dolmen (burial chamber) in County Clare, Ireland

neolithic dolmen in the civil parish of Nevern, Pembrokeshire, Wales

Dowth () is the site of Neolithic passage tombs near the River Boyne in County Meath, Ireland. It is one of the three main tombs of the Brú na Bóinne World Heritage Site, along with Newgrange and Knowth. Its features align it with the other passage tombs, which date from around 3200 BC. Unlike its bigger neighbours, Dowth has mostly been left as a ruin, although its smaller inner chambers are largely intact. The Royal Irish Academy carried out a botched excavation in 1847, leaving a large crater in the mound that has never been repaired.

ancient causeway in the Somerset Levels, England

Oldest stone house in northwest Europe

Gavrinis () is a small island in the Gulf of Morbihan in Brittany, France. It contains the Gavrinis tomb, a Neolithic passage tomb built around 4200–4000 BC, making it one of the world's oldest surviving buildings. Stones inside the passage and chamber are covered in megalithic art. It is likened to other Neolithic passage tombs such as Barnenez in Brittany and Newgrange in Ireland.

archaeological site in Sardinia, Italy

stone circle near Keswick in Cumbria, North West England

Carrowmore (, 'the great quarter') is a large group of megalithic monuments on the Coolera Peninsula to the west of Sligo, Ireland. They were built in the 4th millennium BC, during the Neolithic (New Stone Age). There are 30 surviving tombs with another 25 which have been destroyed since 1800, making Carrowmore one of the largest clusters of megalithic tombs in Ireland, and one of the 'big four' along with Carrowkeel, Loughcrew and Brú na Bóinne. Carrowmore is the heart of an ancient ritual landscape which is dominated by the mountain of Knocknarea to the west. It is a protected National Monum

Loughcrew or Lough Crew () is an area of historical importance near Oldcastle, County Meath, Ireland. It is home to a group of ancient tombs from the 4th millennium BC, some decorated with rare megalithic art, which sit on top of a range of hills. The hills and tombs are together known as Slieve na Calliagh (Sliabh na Caillí) and are the highest point in Meath. It is one of the four main passage tomb cemeteries in Ireland and is a protected National Monument. The area is also home to the Loughcrew Estate, from which it is named.

Neolithic tomb or barrow in Wiltshire, England, UK

Neolithic site in the West of Ireland

dolmen in Évora, Portugal

ancient monument in Vordingborg Municipality (89899)

Bluestonehenge or Bluehenge (also known as West Amesbury Henge) is a prehistoric henge and stone circle monument that was discovered by the Stonehenge Riverside Project about south-east of Stonehenge in Wiltshire, England. All that remains of the site is the ditch of the henge and a series of stone settings, none of which is visible above ground.

Megalithic temple in Malta

cultural property in Riveira, Spain

neolithic chambered tomb in Orkney Islands, Scotland, UK

chambered cairn in Scotland

historic site, with museum, in the Parish of Grouville, Jersey

ancient Egyptian temple

ancient monument in Vordingborg Municipality (89906)

dolmen in Cornwall, England, UK

neolithic chambered cairn

dolmen in County Carlow, Ireland

Burial chamber in Wales

Neolithic chambered cairn and Iron Age roundhouse in Orkney Islands, Scotland, UK

cultural property in Mérida, Spain

cemetery in County Sligo in Republic of Ireland

Dolmen in England

standing stone in Wales

Neolithic chambered tomb in England

menhir

neolithic chambered cairn in Scotland

Neolithic stone circle near Penrith, England

standing stone in Monsaraz, Portugal

standing stone in Monsaraz, Portugal

megalithic temple ruins in Malta

thumb|Polygonal dolmen seen from above

megalithic dolmen in Wales

Troldkirken is a Stone Age long barrow in the village of Nibe, Denmark.

grave in Paimpont, France

menhir in Outer Hebrides, Scotland, UK

neolithic tombs in Évora district, Portugal

megalithic portal tomb in County Roscommon, Ireland

dolmens in Évora, Portugal

dolmen in Ortiga, Portugal

dolmen in Bouleternère, France

megalithic burial tomb in Évora district, Portugal