Space Florida
From Tardis Wiki, the free Doctor Who reference
Space Florida was a place somewhere in the universe that the Doctor and Amy Pond visited a week before the events of The Pandorica Opens/The Big Bang. Space Florida had automatic sand which meant it could clean up any rubbish that had been left on it. (DW: The Big Bang)
After flying the Pandorica in to the TARDIS explosion, The Doctor's life rewound to see a younger version of himself and Amy inside the TARDIS during their Journey to Space Florida. The Future Doctor called out to Amy, who turned around only to hear him but not see him. (DW: The Big Bang)
