Perched on a grassy hill in County Kildare, the crumbling towers of Carbury Castle (also called Fairy Hill) make a moody first stop on any road trip west. This 16th-century ruin, once home to rebel lords, now stands sentinel over rolling farmland—perfect for a quick photo or a leg-stretch. Climb the overgrown motte for panoramic views, and keep an eye out for the resident buzzards circling overhead.