Historical events for
Monday, 11 May 2026

Israeli secret service (Mossad) agents capture Adolf Eichmann, one of the main architects of the Nazi Holocaust, on the outskirts of Buenos Aires, Argentina. The clandestine operation allowed him to be brought to trial in Israel for his crimes against humanity.

The Deep Blue supercomputer, developed by IBM, defeats world chess champion Garry Kasparov in the sixth and decisive game of the match in New York. This milestone represented a historic turning point in the evolution and public perception of artificial intelligence.

The Portuguese state creates the Douro International Natural Park, covering the border stretch of the Douro River. The protected area is of incalculable ecological importance, serving as a sanctuary for various species of birds of prey and preserving the region's steep landscape.

Casa do Artista officially opens in Lisbon. Conceived by leading figures such as Raul Solnado and Armando Cortez, the institution was born with the noble purpose of supporting and dignifying entertainment professionals in their old age, becoming a milestone in cultural solidarity in Portugal.

The Portuguese-language version of Wikipedia is officially launched. The collaborative project revolutionized access to information and knowledge in the Lusophone world, becoming one of the most consulted digital encyclopedias globally.

The Assembly of the Republic approves the Basic Law of Civil Protection. This structural diploma established the fundamental principles, objectives, and areas of action for prevention, rescue, and assistance policies for victims of serious accidents or catastrophes in national territory.

The official presentation of the Citius Project to judicial magistrates takes place. This technological platform revolutionized the Portuguese judicial system, initiating the ambitious process of dematerializing court cases and significantly accelerating procedural efficiency.

The maestro Rui Costa plays his last official game as a professional footballer, wearing the Sport Lisboa e Benfica jersey at the Estádio da Luz. The attacking midfielder retired as one of the brightest and most elegant talents in the history of Portuguese and Italian football.

Match counting for the 33rd matchday (penultimate round) of the Liga Portugal Betclic, played at the Estádio dos Arcos, opposing Rio Ave Futebol Clube and Sporting Clube de Portugal.

Decisive clash at the Estádio da Luz, counting for the 33rd matchday of the Liga Portugal Betclic, opposing Sport Lisboa e Benfica and Sporting Clube de Braga.