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Marble Door at Hagia Sophia
White marble door of the Hagia Sophia, photograph by Juan Ángel Piqueras, Istanbul, 25 February, 2026. The Marble Door (also known as “Gate of Heaven and Hell”) in Hagia Sophia’s south upper gallery marks the threshold between the western...
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Frederick the Great Playing the Flute at Sanssouci
Frederick the Great Playing the Flute at Sanssouci, painting by Adolph von Menzel, Berlin, c. 1850. Frederick the Great was known for both his martial stratagem and his patronage of the arts. An avid flute player, he would often host concerts...
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Battle of Prague, 6 May 1757
Battle of Prague, 6 May 1757, illustration by unknown artist, c. 1760. This illustration depicts Prussian troops, led by King Frederick II of Prussia, driving back the Austrian troops into Prague. The Battle of Prague was one of the largest...
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Map of the Akkadian Empire at Its Height - Ruling the Four Quarters of the World
The Akkadian Empire (c. 2334–2218 BCE), founded by Sargon of Akkad (reign c. 2334–2279 BCE), is widely regarded as the first territorial empire in recorded history. Emerging from the political landscape of Sumerian city-states, Sargon established...
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Frederick William II of Prussia
Portrait of Frederick William II of Prussia, print by Johan Frederick Clemens, London, 1793. Nephew of Frederick the Great, King Frederick William II ruled Prussia from 1786 until his death in 1797. Often overlooked in favor of his uncle...
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Frederick the Great of Prussia
Idealized depiction of Frederick the Great of Prussia, painting by Wilhelm Camphausen, Germany, 1870. This painting is a dramatized version of Frederick the Great painted almost a century after his death. The idealized form of the portrait...
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Flag of the World Health Organization
Flag of the World Health Organization, a specialized branch of the United Nations.
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Edward Jenner Administering a Vaccination
A c. 1910 painting by Ernest Board showing the English physician Edward Jenner (1749-1823), the vaccine pioneer, administering a vaccination against cowpox to James Phipps in 1796, which subsequently protected him from contracting smallpox...
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Maria Theresa and Her Family
Maria Theresa of Austria and her family, oil on canvas by Martin van Meytens, c. 1754. Those depicted include Maria Theresa (right, seated) her husband Francis I (left, seated), a young Joseph II (center, standing next to his mother), and...
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Ndebele Attack on a Laager, 1893
An illustration by Richard Caton Woodville Jr. showing an attack by the Ndebele of Matabeleland on Europeans invading the kingdom during the First Matabele War (1893-4).
