1287

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1250s 1260s 1270s – 1280s – 1290s 1300s 1310s
Years:	1284 1285 1286 – 1287 – 1288 1289 1290

1287 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments
Art and literature
1287 in poetry

Construction of the Uppsala Cathedral began in 1287.

Events

January 17 – The Treaty of San Agayz is signed. King Alfonso III of Aragon conquers the island of Minorca from the Moors.
June 8 – Rhys ap Maredudd revolts in Wales; the revolt will not be suppressed until 1288.
December 14 – A huge storm and associated storm tide in the North Sea and English Channel, known as St. Lucia's flood in the Netherlands, kills thousands and reshapes the coastal life of the Netherlands and England forever. In the Netherlands, a fringing barrier between the North Sea and a shallow lake in Holland collapses, causing the fifth largest flood in recorded history which creates the Zuider Zee inlet and kills over 50,000 people; it also gives sea access to Amsterdam, allowing its development as an important port city. In England, the city of Winchelsea on Romney Marsh is destroyed; nearby Broomhill also destroyed; course of the nearby river Rother diverted to Rye; cliff collapses at Hastings, blocking the harbour; parts of Norfolk are flooded; the port of Dunwich in Suffolk begins its decline.

The Altar of St. James at the Cathedral of San Zeno in Pistoia, Italy — a masterwork of the silversmithing trade containing nearly a ton of silver — is begun; it will not be completed for nearly 200 years.
King Edward I of England arrests the heads of Jewish households, and demands their communities pay hefty ransoms for their release.
Construction on the Cathedral of Uppsala is begun; it will not be completed until 1435.
The Mongol Golden Horde, led by khan Talabuga and Nogai Khan, attacks Poland for the third time. Lublin, Mazovia, Sandomierz and Sieradz are ravaged by the invaders, who are defeated in Kraków.
The Bruntal coat of arms makes its first appearance.

Mamluk sultan Qalawun captures the port city of Latakia in present-day Syria.
Mongol Ilkhan Arghun Khan dispatches Rabban Bar Sauma to the leaders of Europe to negotiate an alliance against the Muslim states, specifically the Mamluk sultanate of Egypt.
Kings Mengrai of the Lanna kingdom and Ramkhamhaeng the Great of the Sukhothai kingdom agree to a peace pact in their region of southeast Asia (present-day Thailand).
Battle of Pagan: The Theravada Buddhist kingdom at Pagan, Myanmar falls to the invading armies of the Yuan Dynasty.

January 24 – Richard Aungerville, English writer and bishop (d. 1345)
April 25 – Roger Mortimer, 1st Earl of March, de facto ruler of England (d. 1330)
Robert III of Artois