Castle Leslie Estate is a collection of upscale properties set on 1,000 acres of picturesque grounds surrounded by rolling Irish countryside. While not strictly a castle, the main house certainly has plenty of historic character that extends to the often lavish guest rooms. Dining is outstanding, with an especially good breakfast and excellent locally-sourced menus for dinner. While the spa offers a good range of treatments and a hot tub, it lacks a pool, sauna, or gym. Those looking for a genuine Irish castle experience might want to consider Ashford Castle in Ireland's west, but horse-lovers would be hard pressed to find better stables and surrounding estate to explore on horseback.