Roman, Greek and ClassicalThree semicircular apses open off a square central space, roofless now, the fill of the vaults showing where the tiles have gone. This was a Roman tomb, built in the fourth century for the owners of a wealthy villa whose remains lie scattered about a hundred metres away. The masonry is original: small blocks of tufa laid in courses, in the technique called opus vittatum, with brick used inside and tufa outside.
Image submitted by Anne T

Modern SitesOverton Down Experimental Earthwork The experimental earthwork on Overton Down, its bank and ditch cut into the chalk in 1960 so that archaeologists could watch how such a structure weathers and settles. The posts along the crest belong to the monitoring. The point of the exercise was and is to dig sections through it at planned intervals over more than a century, and so measure decay against a known starting point rather than infer it. Photo credit: Wiltshire Heritage, (Creative Commons)
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Neolithic and Bronze AgetheCaptain writes: I thought I had seen some pretty impressive megalithic constructions before, but the Locmariaquer ones are making me think again. This is a massively long passage grave, built in at least two different ages, and much repaired/restored with slabs of concrete. We have many more pictures on our page, including some from the inside.
Image submitted by stonetracker

Neolithic and Bronze AgeNot far off the busy road between Morlaix and Roscoff, this Tee shaped allée couverte is apparently a very good example of the type, but it has become very overgrown and unloved, almost part of its surrounding field.
Image submitted by TheCaptain

Modern SitesAn impressive modern stone circle just north of Warrington with a henge, inner ring or cove of stones, solsticial (or near solsticial) alignments, outlying stones in direct alignment with the main circle, holed stones with possible astronomical alignments, a long barrow, sympathetic layout and planting of vegetation and more.
Image submitted by TimPrevett

Rock ArtThis page includes several sites of the Pecos River culture in the Seminole Canyon State Historical Park including Panther Cave, Fate Bell Shelter, Black Cave
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MuseumsMuseum in Dublin with an incredible collection of prehistoric gold and lots else less blingy, also Viking and early Christian artefacts.
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Neolithic and Bronze AgeTwo ancient cairns on a summit on the island of Fasta. The smallest cairn still has a part of a dry-walling, but most is collapsed during time. The site is visitable by a nice 500 m long footpath through a canyon, passing a small cave, a boulderfield and a tower.
Image submitted by jopplanje

MuseumsMuseum in Franklin County, Ohio. The Ohio Historical Society (OHS) is tasked to interpret, collect and preserve the state's heritage. Of primary interest is the Society's archeological collections.
Image submitted by Dodomad

Neolithic and Bronze AgeA round barrow near the golf course at Cherkley Court on the North Downs near Leatherhead. Still just about visible, located via the 1894 OS Map.
Image submitted by Andy B

Neolithic and Bronze AgeA recumbent megalith on North Uist 7m (23ft) long with a maximum width of 2m (6ft 6ins) and a minimum thickness of c. 40cm (16ins). It lies approximately north-south, resting upon half a dozen comparatively small stones which are in turn supported by an underlying cairn
Image submitted by Rthoyle

Neolithic and Bronze AgeTwo recumbent stone slabs on the north-westerly side of the two summits of Craonaval, North Uist. They may mark the site of a burial but could be natural. There does not seem to be an associated cairn. The view is over Benbecula.
Image submitted by Rthoyle

Multi-periodAn ancient bathhouse in Jordan best known for its colourful frescoes adorning its walls and ceilings. The site was made a UNESCO World Heritage Site in 1985. The paintings show the artistic transition between Byzantine culture and the new Islamic era. Additionally, the caldarium (hot room) of the bath house has a domed ceiling with the earliest known representation of the celestial dome painted on a non-flat, hemispherical surface
Image submitted by mrcrow

Neolithic and Bronze AgeBruce A writes:I was taken to a site on top of Jabal Fatouma on the ad-Deir plateau in Petra, southern Jordan, where I was shown this dolmen / propped stone. Despite research, I can find no reference to it. This spot is extremely difficult to get to and while the Bdoul Bedouin seem to find it easy, I struggled along a ledge less than the width of my boot, high up on the cliff face along Wadi Fatouma. I'm sure you could get to it if you started from the north-east, off the Baydah road; it would be a much easier, but longer, stroll.
Image submitted by Bashendi

Multi-periodFormer capital of the Nabataeans, half built and half carved into the cliffs. Petra is without doubt Jordan’s most valuable treasure and world heritage site. A vast, unique city, carved into the sheer rock face.
Image submitted by neolithique02

Iron Age and Later PrehistoryPossibly an Iron Age outwork of the nearby Rybury Camp - this is a roughly 'L' shaped scarp slope, 2.2m high, with an outer causewayed ditch, 0.2m deep. Arms extend to the north and west, 40m and 60m long respectively.
Image submitted by Bladup

Iron Age and Later PrehistoryA hillfort and Neolithic causewayed enclosure a few km south of Avebury. There are two circuits of bank and ditch plus a separate causewayed 'cross-dyke' outwork. A trial trench cut in 1963 found flint flakes and animal bones, while Neolithic sherds have also been found at the site.
Image submitted by NDM

Neolithic and Bronze AgeThe houses here are almost 10,000 years old, dug into the ground, plastered, and each was fitted with one or two pairs of clay pillars, set symmetrically either side of the axis of the chamber, with modelled tops. The pillars hold nothing up. They are not structural, so what they were for is an intriguing question.
Image submitted by StevanB

Neolithic and Bronze AgeTwo burial mounds of the Corded Ware culture stand on the Kapellenberg above Hofheim am Taunus, raised somewhere between 2900 and 2350 BCE. They are the latest prehistoric monuments on a hill that had already been in use for well over a thousand years by the time they were built.
Image submitted by Dodomad

Neolithic and Bronze AgeThis menhir in in Castilla y León has lots of holes and stands high on a ridge near a more modern wind farm. There is a story that eggs were thrown at it to make the holes in it by the local people. It also marks the boundary of a couple of local villages.
Image submitted by cornishstargazer