Torchwood House (tie-in website)
From Tardis Wiki, the free Doctor Who reference
The website of Torchwood House provides information on the features of the house and history of the house, which has been opened for visits by the public.
Behind the scenes
Under the "View Lunar Surface" link on the Observatory page, there is a reference to the Tycho crater of the moon being a source of "unusual signals" since 2001.