Images

Mound A, Etowah Indian Mounds Historic Site, Cartersville, GA. The city was built in three phases between c. 1000 - c. 1550 and the present site encloses three large and three smaller mounds surrounding a central plaza. The three large mounds...

Constantine I's (r. 306-337 CE) vision and the Battle of the Milvian Bridge in a 9th-century Byzantine manuscript. Detail from folio 440 recto of manuscript BnF MS Gr510, dated 879-883 and containing the homilies of Gregory of Nazianzus...

The Emblem of Christ Appearing to Constantine / Constantine's conversion, oil on panel painting by Peter Paul Rubens, 1622. Philadelphia Museum of Art.

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 oil-on-canvas painting of Charles I of England (r. 1625-1649) by Anthony van Dyck. The artist has chosen to represent the king in triplicate, each version wearing different clothing and coloured slightly differently. This choice...

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...