Constantinos Apostolou Doxiadis

His influence had already diminished at his death in 1975, as he was unable to speak for the last two years of his life, a victim of amyotrophic lateral sclerosis (ALS). His company Doxiadis Associates changed owners several times after his death, the heir to his computer company remained but without any links to planning or ekistics. The Delos Symposium was discontinued, and the World Society of Ekistics is today an obscure organisation.

In Greece, he faced persistent suspicion and opposition and his recommendations were largely ignored. Having won two large contracts (National Regional Plan for Greece and Master Plan for Athens) from the Greek Junta he was criticised by competitors, after its fall in 1974, portrayed as a friend of the colonels. His visions for Athens airport to be constructed on the adjacent island of Makronissos, where political prisoners were held, together with a bridge, a rail link and a port at Lavrion were never realised.

In the 1960s and 1970s, urban planner and architect Constantinos Doxiadis authored books, studies, and reports including those regarding the growth potential of the Great Lakes Megalopolis. At the peak of his popularity, in the 1960s, he addressed the US Congress on the future of American cities, his portrait illustrated the front cover of Time magazine, his company Doxiadis Associates was implementing large projects in housing, urban and regional development in more than 40 countries, his Computer Centre (UNIVAC-DACC) was at the cutting edge of the computer technology of his time and at his annual "Delos Symposium" the World Society of Ekistics attracted the worlds foremost thinkers and experts.

Doxiadis is the father of "ekistics", which concerns the science of human settlements, including regional, city, community planning and dwelling design. The term was coined by Doxiadis in 1942 and a major incentive for the development of the science is the emergence of increasingly large and complex settlements, tending to regional conurbations and even to a worldwide city. However, ekistics attempts to encompass all scales of human habitation and seeks to learn from the archaeological and historical record by looking not only at great cities, but, as much as possible, at the total settlement pattern.

In Riyadh, Doxiadis reoriented the city on a southwest-northeast axis, rendering "the planned city... similar to an immense mosque facing Mecca." His work was also part of the architecture event in the art competition at the 1936 Summer Olympics.

Constantinos A. Doxiadis (14 May 1913 – 28 June 1975), often cited as C. A. Doxiadis, was a Greek architect and urban planner. During the 1960s, he was the lead architect and planner of Islamabad, which was to serve as the new capital city of Pakistan. He was later known as the father of ekistics, which concerns the multi-aspect science of human settlements.