Angkor Wat in Cambodia is one of the most famous places in the world, and rightly so.
But what is it, who built it, and when?
Well, the first thing to say is that Angkor Wat stands at the heart of a colossal, abandoned city...
Angkor is the name of an historic (and ruined) city in northwestern Cambodia.
It was the capital of the Khmer Empire from the 9th to the 13th centuries AD, and in those years it rose to become one of the world's major urban centres.
But Angkor was abandoned in the year 1431.
Angkor Wat itself was built during the 12th century, in about thirty years, under King Suryavarman II.
Suryavarman had reunited the Khmer Empire and extended its borders — Angkor Wat was supposed to be both the empire's primary temple and his final resting place.
174 years ago there was a huge storm in northern Scotland, and it uncovered something strange.
From beneath the soil emerged a perfectly preserved village older than the Pyramids, and it even had furniture.
This is the 5,000 year old story of Skara Brae...
Orkney is the name of an archipelago just off the coast of northern Scotland.
It was here, in 1850, that a colossal storm partly destroyed a grassy hill by the sea.
When locals investigated they discovered that it had revealed what seemed to be walls made of large stones.
A local landowner and amateur archaeologist called William Watt started a proper dig, and after excavating four houses he brought in an expert called George Petrie.
By 1868 the importance of the discovery — which some claimed to have known about for years — was clear.
Rembrandt, who lived 400 years ago, is usually called one of the greatest artists who ever lived.
But why? What made him so good?
Strange as it sounds, what made Rembrandt special was the way he painted himself — and how many times he did it...
Rembrandt Harmenszoon van Rijn was born in the Netherlands in 1606.
By 18 he was a painter, but unlike others of his generation he refused to study in Italy and remained at home.
At 22 he painted this brooding, supremely confident self-portrait — and a star was born.
This was the Dutch Golden Age, a time of cultural and economic flourishing when the Netherlands found itself at the centre of global politics and its cities were booming with trade.
And, of course, an impossibly talented generation of artists like Vermeer and Rubens had arisen.
The Rosetta Stone was discovered exactly 225 years ago today — inside the wall of an old fortress that was being demolished.
This is the strange story of the stone that brought Ancient Egypt back to life...
Why is it called the Rosetta Stone?
Because it was discovered near a town called Rashid in northern Egypt — when the French invaded in the late 18th century they corrupted its name to Rosetta.
So, there are three parts to this story.
First: what is it?
The Rosetta Stone is a slab of granodiorite (a rock similar to granite) mined at Aswan in southern Egypt; it's over 1 metre tall, 3/4 of a metre wide, and weighs 3/4 of a tonne.
Why do the badges of the England and Spain football teams look the way they do?
It's a story that involves the Holy Roman Empire, a purple lion, Hercules, and the possible origins of the dollar sign...
When England first played an international match in 1872 — the first international game in history, against Scotland — they simply wore three lions as a crest.
The ten roses were added in 1949, one for each region of the Football Association.
(That first game was a 0-0 draw).
Why three lions?
Well, they have been a symbol of England for about 800 years — since 1198, to be precise, when King Richard I adopted them as his symbol.
He ruled from 1189 to 1199 and has long been a romanticised hero, as in this 1841 painting by Merry-Joseph Blondel.