Greenan Castle, a ruined 16th-century tower house, offers stunning coastal views and a glimpse into Scottish history. The site is generally accessible year-round, with no seasonal restrictions, though weather can impact the experience. Due to the ruins, accessibility may be limited for visitors with mobility issues. Visiting is free, making it a budget-friendly option. A typical visit lasts about an hour or two, allowing ample time to explore the castle remains and enjoy the scenic surroundings. While a guided tour isn't necessary, exploring on your own or researching the castle's history beforehand can enhance your visit. It's suitable for solo travelers or small groups.