Doha (Arabic: الدوحة‎, ad-Dawḥa or ad-Dōḥa, literally: "the big tree") is the capital city of the state of Qatar. Located on the Persian Gulf, it had a population of 998,651 in 2008, and is also one of the municipalities of Qatar. Doha is Qatar's largest city, with over 60% of the nation's population residing in Doha or its surrounding suburbs, and is also the economic centre of the country.

Doha also serves as the seat of government of Qatar, which is ruled by Sheikh Hamad bin Khalifa Al Thani. Doha is home to the Education City, an area devoted to research and education. Doha was the site of the first ministerial-level meeting of the Doha Development Round of World Trade Organization negotiations. The city of Doha held the 2006 Asian Games, which was the largest Asian Games ever held. Doha also hosted the 2011 Pan Arab Games and most of the games at the 2011 AFC Asian Cup. Doha will also host a large number of the venues for the 2022 FIFA World Cup. The World Petroleum Council held the 20th World Petroleum Conference in Doha in December 2011.

Santiago Calatrava Valls (Valencian pronunciation: [santiˈaɣo kalaˈtɾava ˈvaʎs], born 28 July 1951) is a Spanish architect, sculptor and structural engineer whose principal office is in Zürich, Switzerland. Classed now among the elite designers of the world, he has offices in Zürich, Paris, Valencia, and New York City.

Calatrava was born in Benimàmet, an old municipality now integrated as an urban part of Valencia, Spain, where he pursued his undergraduate architecture degree at the Polytechnic University of Valencia along with a post-graduate course in urbanism. During his schooldays, he also undertook independent projects with a group of fellow students, bringing out two books on the vernacular architecture of Valencia and Ibiza Following graduation in 1975, he enrolled in the Swiss Federal Institute of Technology in Zürich, Switzerland, for graduate work in civil engineering. In 1981, after completing his doctoral thesis, "On the Foldability of Space Frames", he started his architecture and engineering practice.

Tariq Ramadan (Arabic: طارق رمضان‎; born 26 August 1962 in Geneva, Switzerland) is a Swiss academic and writer. He is also a Professor of Contemporary Islamic Studies in the Faculty of Oriental Studies at Oxford University. He advocates the study and re-interpretation of Islamic texts, and emphasizes the heterogeneous nature of Western Muslims.

Tariq Ramadan is the son of Said Ramadan and Wafa Al-Bana, who was the eldest daughter of Hassan al Banna, who in 1928 founded the Muslim Brotherhood in Egypt. Gamal al-Banna, the liberal Muslim reformer is his great-uncle. His father was a prominent figure in the Muslim Brotherhood and was exiled by Gamal Abdul Nasser from Egypt to Switzerland, where Tariq was born.

Tariq Ramadan studied Philosophy and French literature at the Masters level and holds a PhD in Arabic and Islamic studies from the University of Geneva. He also wrote a PhD dissertation on Friedrich Nietzsche, entitled Nietzsche as a Historian of Philosophy.