This week on Dezeen, Swedish furniture retailer IKEA revealed that it is branching out into the online resale market with the launch of its IKEA Preowned platform.

The marketplace, which aims to rival online resale platforms like eBay, Gumtree and Facebook Marketplace, will let sellers list their preloved furniture and homeware by uploading photos and setting a price.

Sellers can be paid directly by the buyer or receive an IKEA voucher with a 15 per cent additional credit. The initiative is part of IKEA's aim to become a circular business by 2030.

British studio Foster + Partners has unveiled its design for an "elegant" supertall skyscraper in Miami, which will be located in the city's Brickell neighbourhood and hold hedge fund Citadel's headquarters.

In other skyscraper news, local firm C3D Architecture has broken ground on a skyscraper with a bulbous shape in Manhattan, which was designed to have a "striking visual effect".

Ahead of World Skyscraper Day, we have invited readers to vote for their favourite skyscraper completed in the last 12 months. On the shortlist are skyscrapers designed by architecture studios Jahn, BIG and Snøhetta, among others.

Architectural photographer Marc Goodwin has captured sixteen Japanese architecture studios, focusing on "young, non-traditional studios".

The series of photos features architecture studios working in settings ranging from spacious warehouses and offices to smaller-scale workshops and residences.

Dezeen showcased two twisting wooden towers this week. In Sweden, local studio White Arkitekter completed the timber Observation Tower Kärven. Designed to resemble "a bundle of twisted straws", it is located in a nature reserve.

In Germany, students and researchers at the University of Stuttgart have designed two experimental buildings, including the Wangen Tower. Constructed using large panels of self-shaping CLT, the tower has a twisted form.

In design news this week, Belgian design firm Studio Part created a demountable bench that was designed to shape trees into the form of a bench.

The bench lets people guide willow branches to become intertwined and follow a curving form that will eventually form a comfortable seat. After three to four years, the branches are strong enough to form a self-supporting seat.

Popular projects on Dezeen this week included a stone ruin turned into a home in Spain, a cantilevered black house in Queensland and a grass-topped CLT house in Hungary.

This week's lookbooks showcased homes with ladders and self-designed homes by architects and designers.

This week on Dezeen

This week on Dezeen is our regular roundup of the week's top news stories. Subscribe to our newsletters to be sure you don't miss anything.