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The Washington Post has a superb editorial on unsustainable pay for public employees who benefit from union negotiated, gold plated compensation deals.

-- There is a door in Paris that leads nowhere, a brownstone in Brooklyn with a secret passage to the subway, and a London facade that isn't what it seems.

-- The Geotagger's World Atlas is up at Flickr.

-- The evolution of bike sharing programs across decades.

-- It's less pleasant to walk along canals that are underground.

-- Movies that showcased the cities where they were set.