Images

Serpent Mound, Ohio. It was first positively dated and attributed to the Native American Adena culture (c. 800 BCE - 1 CE) but later excavations strongly suggested it was built by the natives of the so-called Fort Ancient culture (c. 1000-1750...

Serpent Mound, Ohio. It was first positively dated and attributed to the Native American Adena culture (c. 800 BCE - 1 CE) but later excavations strongly suggested it was built by the natives of the so-called Fort Ancient culture (c. 1000-1750...

A 1633 painting of Charles I of England (r. 1625-1649) by Anthony van Dyck. (Royal Collection, Windsor Castle)

A c. 1635 painting of Charles I of England (r. 1625-1649) by Anthony van Dyck. (Royal Collection, London)

The Cullinan I diamond, added to the Sovereign Sceptre of the British Crown Jewels in 1911. The diamond weighs 530 carats and is also known as the Star of Africa. The British Crown Jewels are kept in the Tower of London. (Detail from an image...

A 1908 photograph of the rough Cullinan diamond which was discovered in Transvaal, South Africa in 1905. The diamond weighed 3,106 carats. Nine large stones and 96 smaller ones were cut from the diamond. Cullinan I is now set in the Sovereign...

A 1908 photograph of the nine largest stones cut from the Cullinan diamond which was discovered in Transvaal, South Africa in 1905. The stones are each named Cullinan I to IX after the owner of the mine in which it was found. Cullinan I is...

Queen Mary (l. 1876-1953), consort of George V of England (r. 1910-1936), wearing four of the famed Cullinan diamonds. She is wearing Cullinan I and Cullinan II on her sash and Cullinan III and Cullinan IV from her necklace. Detail of a photo...

Red moon with a wolf.

Model of Cahokia Mounds, Illinois, which flourished between c. 650 - c. 1350 CE.