A mash-up by Christopher Gutteridge (@cgutteridge) at the University of Southampton. This uses Ordnance Survey postcode data or data from DBPedia to try to work out the correct orientation on a panoramic picture of London taken from the BT Tower. (open data for the win!). Oh, and it throws in a Google map + street view n/s/e/w views and an image from wikipedia if it can find one.
PRO TIP: obviously tall things are more likely to be visible. Street level is obscured. The camera should center more or less on the ground location of the thing, but you may need to pan slightly in some cases, such is life.
WIKI URL: http://en.wikipedia.org/wiki/Tate_Modern
WIKI ID: Tate_Modern
URI: http://dbpedia.org/resource/Tate_Modern
Got 1668 triples
No spatial info for this thing.