Not quite as heirarchical as what you've got, but check out http://mapof.it/199-... | Hacker News

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AlexeyMK on April 29, 2013 | parent | context | favorite | on: I made an example app to show how Google map URLs ...

Not quite as heirarchical as what you've got, but check out http://mapof.it/199-valencia-st-san-francisco

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