"You can compare the model to what is real." Throughout the school year, Donohue and Engelen have been applying their advanced math skills to create a portion of the model castle.

My castles are strictly utilitarian, more fortresses than castles, really. While other castle builders spend time dribbling goop into an elaborate filigree of towers and spires and minarets and ...

Seibert, who goes by Box Builder on Flickr, has been making sand castles since childhood—he only recently started photographing his creations, as he told me today over email. He also uses ...

Marc Morris's passion for castles began at an early age, writes Phillippa Boston. The author of Castle (PanMacmillan £18.95) and presenter of the accompanying Channel 4 series is completing his ...

Road Trip 2011: King Ludwig II bankrupted his state of Bavaria by building this fairytale castle, which was still under construction at the time of his mysterious death at age 41.