March 7 - John Hancock Center official opening ceremony, by Bruce Graham/ SOM, in Chicago, Illinois.
May 31 - Cathedral of Brasilia, designed by Oscar Niemeyer, is dedicated.
July 21 - The Aswan High Dam in Egypt (officially opened in January 1971).
August - Dai Heiwa Kinen Tō, cenotaph in Osaka, Japan.
December 23 - The North Tower of the World Trade Center in New York City, by Minoru Yamasaki, is topped out at 1,368 feet, making it the tallest building in the world. The building accepts its first tenants that same month.
11 Stanwix Street (Westinghouse Tower) in Pittsburgh, Pennsylvania.
East Harlem Pre-School in New York City, by Hammel, Green and Abrahamson.
Euston Tower in London, England.
KEMO Toren telecommunications tower in Arnhem, Netherlands.
Mount Angel Abbey Library, by Alvar Aalto, in St. Benedict, near Mount Angel, Oregon.
Oklahoma Theater Center in Oklahoma City, by John M. Johansen.
Phillips Exeter Athletics at Exeter, New Hampshire, by Kallmann McKinnell & Wood.
Trust Bank Building in Johannesburg, South Africa.
The Royal Commonwealth Pool in Edinburgh, Scotland, designed by RMJM.
The Apollo Pavilion in Peterlee, England, designed by Victor Pasmore.
World Trade Center (Tokyo), Japan's tallest building at this time
Yerevan Chess House, Armenia.
Queensgate Market, Huddersfield, England, by J. Seymour Harris Partnership (Gwyn Roberts, project architect).
Równica Sanatorium, Ustroń-Zawodzie, Poland.
House of Soviets (Kaliningrad), designed by Yulian L. Shvartsbreim; never completed as a functional building.
AIA Gold Medal - Richard Buckminster Fuller.
Architecture Firm Award - Ernest J. Kump Associates.
RAIA Gold Medal - Jack McConnell.
Royal Gold Medal - Robert Matthew.
July 4 - Tatiana Fabeck, Luxembourg architect
April 16 - Richard Neutra, Austrian-American architect working in Southern California (born 1892)
May 9 - Oscar Stonorov, German-born modernist architect and architectural writer, historian and archivist (born 1905)
May 24 - J. George Stewart, US architect and politician (born 1890)
July 3 - Joseph Charles Fowell, Australian architect (born 1891)
July 11 - André Lurçat, French modernist architect, landscape architect, furniture designer and city planner (born 1894)
July 20 - Egon Eiermann, German architect (born 1904)
September 11 - Ernst May, German architect and city planner (born 1886)
1970 in architecture Wikipedia
The year 1970 in architecture involved some significant architectural events.