London taxi drivers converged on Trafalgar Square in their vehicles on Wednesday afternoon to stage a major protest over a mobile phone app for booking private journeys in and around the capital. Full story here

Photo: Martin Godwin

The theme for this weekend’s photos was happy. Louisa Reeves submitted this shot: “One of my neighbours is pretty happy about the arrival of summer.” See more

EyewitnessA crimson sunset over the Italian city of Florence turns the waters of the river Arno flame-orange as it flows through the 13th-century Ponte Vecchio. Photograph: Giuseppe Torre/Solent News

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Bristol turns central street into giant water slide – in pictures

Bristol Park and Slide project, an interactive temporary installation by artist Luke Jerram, is set up in Park Street in the centre of Bristol. See more »

Picture credits: Matt Cardy/Getty Images (1 and 2). Leon Neal/AFP/Getty Images (3)

Gherkin’s salad days over amid financial pickle for London tower

The Gherkin, voted London’s favourite tower, has been put into receivership 10 years after its completion helped transform the capital’s skyline.

The 41-storey City landmark is likely to be put up for sale shortly and is expected to attract offers of more than £550m from Middle East sovereign wealth funds and other potential buyers. Read more »

Photograph: David Sillitoe/The Guardian 

Campaign calls for Paris ‘love locks’ to be banned

With Paris’s bridges groaning under the weight of an estimated 700,000 padlocks scrawled with lovers’ names, campaigners say it’s time to end the love locks ‘madness’.Read more

Pictures of the week: London’s Square Mile, by Polly Braden

Polly Braden began photographing the Square Mile of London in 2006, fascinated by the way that this City within the city operates. With its own Lord Mayor and independent police force, the Square Mile is something of an oddity, and Braden’s photographs pose the question, “What is this space in the middle of our city?” Read more

Photos: Polly Braden

The stretched middle: can Londoners cope with hundreds of new towers?

London’s relatively clear skyline, once dominated by St Paul’s Cathedral and, later, by Canary Wharf, the Gherkin and the Shard, is likely to get an awful lot more crowded over the coming years, with almost 250 tall towers proposed, approved or already under construction. Read more

Photograph: Peter Macdiarmid/Getty Images

Tall storeys: Lucinda Grange’s daredevil photography

British adventure photographer Lucinda Grange has travelled the world, scaling famous buildings and structures and taking pictures from the top. See more

Photographs: Lucinda Grange/Barcroft USA (click images for captions)

The New York subway photographs of Christopher Morris

This atmospheric series depicts the chaos and squalor of New York’s subway system in 1981, in all its graffitied glory. The then 22-year-old Christopher Morris – these days best known for his war photography – was interning at a photo agency. “I was new to New York, at the very start of my career, and I became mesmerised by the total urban decay, that was most visual with the subway system.” See more