A city centre is the commercial, cultural and often the historical, political and geographic heart of a city.

The city centre is the (often historical) area of a city where commerce, entertainment, shopping and political power are concentrated. The term is most commonly used in the United Kingdom and Ireland, as opposed to "downtown", which is most commonly used in North America. While in most cases, the CBD is within the city centre, the concept "city centre" differs from the Central business district. The latter solely revolves around economic and financial power, while the former also includes historical, political and cultural factors (e.g. La Défense is the central business district of Paris, but is not the city centre).

A city centre is often the first settled part of a city, which can make it the most historical part of a city.

In Dutch the terms binnenstad, centrum, stadscentrum or stadskern are used to describe the city centre. Amsterdam is a clear example of the city centre and the central business district not being the same area. The city centre of Amsterdam is Centrum, the historical heart of the city, while the CBD of Amsterdam is the Zuidas in the south.

Captain America is a fictional character, a superhero who appears in comic books published by Marvel Comics. The character first appeared in Captain America Comics #1 (cover-dated March 1941), from Marvel Comics' 1940s predecessor, Timely Comics, and was created by Joe Simon and Jack Kirby. As of 2007, an estimated 210 million copies of "Captain America" comic books had been sold in 75 countries. For nearly all of the character's publication history, Captain America was the alter ego of Steve Rogers, a frail young man who was enhanced to the peak of human perfection by an experimental serum in order to aid the United States war effort. Captain America wears a costume that bears an American flag motif, and is armed with an indestructible shield that can be thrown as a weapon.

An intentionally patriotic creation who was often depicted fighting the Axis powers of World War II, Captain America was Timely Comics' most popular character during the wartime period. After the war ended, the character's popularity waned and he disappeared by the 1950s aside from an ill-fated revival in 1953. Captain America was reintroduced during the Silver Age of comics when he was revived from suspended animation by the superhero team the Avengers in The Avengers #4 (March 1964). Since then, Captain America has often led the team, as well as starring in his own series.

Zaha Hadid, CBE (Arabic: زها حديد‎ Zahā Ḥadīd; born 31 October 1950) is an Iraqi-British architect and winner of the Pritzker Architecture Prize in 2004.

Hadid was born in 1950 in Baghdad, Iraq. She received a degree in mathematics from the American University of Beirut before moving to study at the Architectural Association School of Architecture in London.

After graduating she worked with her former teachers, Rem Koolhaas and Elia Zenghelis at the Office for Metropolitan Architecture, becoming a partner in 1977. It was with Koolhaas that she met the engineer Peter Rice who gave her support and encouragement early on, at a time when her work seemed difficult to build. In 1980 she established her own London-based practice. During the 1980s she also taught at the Architectural Association. She has also taught at prestigious institutions around the world; she held the Kenzo Tange Chair at the Graduate School of Design, Harvard University, the Sullivan Chair at the University of Illinois at Chicago School of Architecture, guest professorships at the Hochschule für bildende Künste Hamburg, the Knowlton School of Architecture, at The Ohio State University, the Masters Studio at Columbia University, New York and the Eero Saarinen Visiting Professor of Architectural Design at the Yale School of Architecture in New Haven, Connecticut. In addition, she was made Honorary Member of the American Academy of Arts and Letters and an Honorary Fellow of the American Institute of Architects. She has been on the Board of Trustees of The Architecture Foundation. She is currently Professor at the University of Applied Arts Vienna in Austria.