There is no architecture quite like medieval architecture. This picture shows part of the outer wall and tower of Windsor Castle. Photo was taken with a Galaxy S3 with a smidgen of post-processing via Snapsneed.
Toured the University of Michigan-Ann Arbor during a college visit road trip through much of the Big Ten. Was fortunate to snap a quick picture in the middle of the law school's library. This shot was taken with my trusty Galaxy S3 and edited with the stock Android Gallery gallery app.