I Had Seen Castles is a 1993 novella for young adults written by the American writer and Newbery Medalist Cynthia Rylant.

It is a story about a young American named John Dante who enthusiastically enlists in 1942 but soon comes to understand the horrors of war.

It can be deemed as an anti-war novel due to Rylants way of describing the War and its consequences.

"The volume is deceptively slim; this finely drawn novel projects emotional truths to rival those of Remarque's All Quiet on the Western Front."^[1]