Ankara's mayor is being sued for building a giant robot

There's just no pleasing some people.

Slum tourism, Johnny Marr on modernism, and the never-ending bridge paintjob

Other cool stuff we found this week.

General Election 2015: What do the manifestos promise for London?

We read them so you don’t have to.
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What exactly is self-cleaning concrete, and how does it work?

Photocatalysis, obvs.

Britain's transport police want you to text them if you're harassed on the tube

Also, they've released terrifying video.
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Why has Generation Rent walked out of the Homes for Britain campaign?

It was all going so well.