Adjaye won the Beazley Design of the Year prize for The Smithsonian National Museum of African American History and Culture in Washington, with the judges describing the project as a "major turning point" in architecture.
Other winners included Nike's Pro Hijab and the MIT Self-Assembly Lab's Rapid Liquid Printing project, who won in the fashion and digital categories respectively.
The other big winner this week was architecture studio Tonkin Liu, which won the Don't Move, Improve! award for London's best house extension.
The winning project, Sun Rain Rooms, features a concave roof that allows rainwater to help transform the house's courtyard into a pool.
In British political news, the Democratic Unionist Party supported a bridge between Northern Ireland and Scotland. It was proposed by architect Alan Dunlop in response to the UK foreign secretary's "Boris Bridge".
Staying in the UK, cladding panels labelled "non fire retardant" were discovered at the Will Alsop-designed Chips apartment block in Manchester, UK, as part of a safety review following the Grenfell Tower fire.
And in Leicester, a court heard how a drug-smuggling operation brought over £10 million worth of cocaine into the UK under the guise of a local interior design company.
In architecture this week, a tower with wavy canopies designed by Sou Fujimoto was revealed as part of a competition-winning €275 million masterplan for a new neighbourhood in Nice, France.
Meanwhile, British architecture firm Foster + Partners unveiled a new headquarters for golfing association PGA Tour in Florida, which will feature a large overhanging roof.
Jeff Koons came under fire from Parisian artist and gallery owners for his decision to gift his Bouquet of Tulips sculpture to the city as a memorial to the victims of the 2015 terror attacks.
In other art-related news, Amsterdam's Stedelijk Museum cancelled a major retrospective of work by Memphis founder Ettore Sottsass and New York's Museum of Modern Art announced a show dedicated Yugoslavia's impressive concrete architecture.
Popular projects on Dezeen this week included an angular American football stadium designed for the Minnesota Vikings, a renovated capsule hotel in Tokyo and a tiny countertop dishwasher created for micro homes.