Yes, the Cliffs of Moher are widely considered a "must-see" and are definitely worth visiting, even with the crowds. Standing over 700 feet (214 m) at their highest point and stretching for 8 miles along the Atlantic coast, they offer some of the most dramatic coastal scenery in the world. On a clear day, you can see the Aran Islands and Galway Bay. To make the visit "worth it," many locals recommend avoiding the main Visitor Centre midday peak; instead, arrive before 9:00 AM or after 5:00 PM for the best light and fewer crowds. For a more authentic experience, you can hike the Doolin Cliff Walk, a 5-mile trail that brings you to the cliffs for free and offers superior views away from the paved barriers. While the weather is famously unpredictable and often foggy, the sheer scale of the limestone and shale formations, combined with the thousands of nesting seabirds (including puffins), creates a powerful, "edge-of-the-world" atmosphere.