The new World Trade Center is still in limbo, its future as uncertain as New York’s. Why have New Yorkers been so badly let down?

Photo: nythroughthelens/Vivienne Gucwa/Guardian

What is London’s $300m garden bridge for? 

Take one voguish designer, one national treasure and one icon-hungry mayor and what do you get? A floating forest across the Thames. We interviewed its designer

Image: Arup

Dying shopping malls are speckled across the United States, left to rot as online shopping and the resurgence of city centres make them increasingly irrelevant to young people. Read more

Photo: Seph Lawless

The city is fast becoming China’s city of clones. Boasting 56 famous replica bridges as well as Venetian- and Dutch-style villages, the Chinese city of Suzhou is the home of ‘duplitecture’. But what’s driving this passion for urban mimicry?

Photo: Michael Silk

Photos of the day: Not for the faint hearted: glaziers finish replacing a layer of protective coating over the glass surface on the floor of one of four transparent ledges that jut out from the 103rd floor of the Willis Tower in Chicago. Photograph: M. Spencer Green/AP

The underground cities of Cappadocia, Turkey have been rediscovered by the produce industry. The constant underground temperature of about 13C means they’re ideal for storing thousands of tonnes of fruit and vegetables. Read more 

Potatoes stored in the Cappadocia caves can stay fresh for many months. Photograph: Ali Kabas/Alamy

The architecture of the river Thames – in pictures

London is a city divided by the Thames, but united by its bridges, which allow people to navigate the city. An exhibition at theMuseum of London Docklands displays rare archive photographs. See more photos

The Houses of Parliament and Big Ben taken from the south side of the River Thames near Westminster bridge in 1965. Photograph: Henry Grant

New York success story: growing the Garden of Eden in Brooklyn

The gentrification of Fort Greene has left longer-term residents with a problem: how to get hold of affordable and fresh food. A community gardening project is sowing the seeds of change. Read more

Photograph: Peggy Truong

The evolution of London: the city’s near-2,000 year history mapped

How did London evolve from its creation as a Roman city in 43AD to the crowded, chaotic megacity we see today? The London Evolution Animation takes a holistic view of what was built in the capital during different historical periods – what has been lost, what saved and what protected. Read more »

From Milan to Mecca: the world’s most powerful city brands revealed

The inaugural Guardian Cities brand barometer ranks world cities on everything from transport and weather to crime and social ‘buzz’ – and they won’t all be pleased with the results

In at number two, New York City, for its global scale and good weather. See the full list »

Photograph: Alamy