Anish Kapoor

Designed by Anish - built by Kirk, Matt, Andy, John and Wayne

Standing nearly twice as tall as the Olympic Stadium, the crazed and twisted steelwork of the ArcelorMittal Orbit tower is an undeniably impressive piece of engineering. Consider that it was bolted together by just three men, and its loops and spirals seem more imponderable than ever.

The Diary: Old Vic Tunnels; Anish Kapoor; A Game of Thrones; Calvert

After a Christmas fire which put them out of action, the Old Vic Tunnels reopened triumphantly last week with a series of gigs by the cult New York band Edward Sharpe & the Magnetic Zeros. Before their energetic set, during which Skins star Nicholas Hoult led the moshing, gig-goers were entertained by acrobats, firebreathers and theatre pieces.

The IoS smug list 2010

It's the perfect antidote to all that yuletide harmony &ndash; the <i>IoS</i> index of the year's insufferably self-satisfied

Paddington's Merchant Square building is a bit of a mind-bender

Britain is awash with large commercial buildings whose façades have been tarted up with supposedly creative gubbins because planners encourage the so-called Per Cent For Art approach. We're not talking Anish Kapoor. Nine times out of ten, that 1 per cent of building cost pays for witless "artistic" glass fins projecting from façades.

On the agenda: We're off to the shops at St Martins Lane Hotel, then

Just when you thought Dover Street Market, the fashion emporium created by Rei Kawakubo of Comme des Garçons, couldn't get any cooler, they go and build a pop-up store at London's St Martins Lane Hotel, home to the A-list hang-out Bungalow 8. Well, 'tis the season: there are pre-Christmas pop-ups everywhere, but not many offer such a range of fashion-forward festive treats. The six storeys of the shop have been edited into a slick capsule, including CDG diffusion lines Play and Shirt, as well as the store's own new label. Open now, until 8 January. Harriet Walker

Anish Kapoor, Royal Academy, London

The silliest work in the Anish Kapoor exhibition is a kind of shooting range. A cannon is aimed through one of the Royal Academy's ornate doorways. (The public are safely held back.) Every 20 minutes, an operator loads it with a bucketful of deep red gunk. It fires. The gunk hits the wall through the doorway, dribbles down, piling up at the bottom, with much spatter. This will accumulate over the next three months.

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