Cairn of Barnenez: One of Europe's Oldest Megalithic Monuments
A massive Neolithic stone mound containing eleven passage graves, partly quarried away in the 1950s, then excavated, restored and protected as a historic monument.
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A massive Neolithic stone mound containing eleven passage graves, partly quarried away in the 1950s, then excavated, restored and protected as a historic monument.
The first farming society of the southern Mesopotamian plain, whose villages, irrigation and temples laid the foundations for the Uruk period and Sumerian civilisation.
Dismissed as a forgery after 1880, Altamira was accepted as genuine Palaeolithic art in 1902 and became the founding site for the study of Ice Age cave painting.
Dubois named Pithecanthropus erectus in 1894; after decades of controversy the fossils were recognised as the first known specimens of Homo erectus.
The skull taken to Paris in 1795 was recognised as an extinct giant marine lizard, later named Mosasaurus, and became key evidence that species can die out.
Repeated glaciations left tillites on several continents and coincided with the first lasting rise of atmospheric oxygen.
The dam collapsed and a flood wave destroyed much of Johnstown, killing 2,209 people; the South Fork Fishing and Hunting Club was never held legally liable.
British victory; one Italian battleship was sunk for good and two others put out of action for months, for the loss of two aircraft.
Serbia was occupied, but the surviving army was evacuated to Corfu, rebuilt and returned to fight on the Salonika front.
The Nian were defeated in 1868 after Qing commanders used blockade lines and regional armies to pin down their cavalry.
Patriot victory; the royalist garrison of Quito capitulated and the region joined Gran Colombia.
London gained the first tunnel known to have been built successfully under a navigable river; it later became part of the city's railway network.