This week, announcements were made about the masterplan for the upcoming 2024 Olympic Games in Paris and a makeover for one of the city's most controversial buildings.

French studio Nouvelle AOM, made up of leading architects from three Parisian firms, was revealed as the winner of a competition to give Tour Montparnasse a £266 million "green" renovation.

The skyscraper is set to gain a rooftop conservatory and plants covering the facade, with work due to complete in time for the city's 2024 Olympic Games.

Architects Populous and engineers Egis also outlined their Olympics masterplan for the French capital, which will see 38 venues dotted around the city. Famous landmarks will be used as a backdrop for the games, with a beach volleyball court set to be installed beside the Eiffel Tower.

Elsewhere, BIG, MVRDV and Gensler were among ten firms selected to participate in Resilient by Design's Bay Area Challenge, which asks entrants to put forward ideas to help the region tackle climate change.

Fernando Romero's Mexican studio FR-EE also celebrated a victory, as winners of a competition to design a Hyperloop high-speed transport line, which would shuttle passengers from Mexico City to Guadalajara in 45 minutes.

In other architecture news, work began on Schmidt Hammer Lassen's latest project in Shanghai – a business incubator designed to adapt to the city's volatile weather.

This year's London Design Festival has been taking place all week, and the Dezeen team has been busy covering the best projects from the various events taking place.

Highlights have included Faye Toogood's furniture fair, a tower of robotically cut stone blocks, and a range of products made using mushroom mycelium.

Elsewhere in the British capital, Banksy paid tribute to late artist Jean-Michel Basquiat with paintings on walls at the Barbican, ahead of a retrospective exhibition at the venue.

Another artist that made headlines was Anish Kapoor, who was accused of being "mean-spirited" after he decided to continue with a contentious roof extension to his south London studio.

Popular projects and stories this week on Dezeen included a Brooklyn row house with hiding places for the owner's cats and a studio that an architect built for himself at the bottom of his garden.