I have read in one book, that every time you take photos somewhere, you should try also to look up. An really, quite often you can find quite interesting stuff above your head :)
This photo was taken in one of the gates by the Bratislava Castle at night. All the lights from the surrounding areas created really interesting shadows, which i liked.
HDR from three shots, taken with Canon 450D with Sigma 10-20mm lens, from a gorillapod.