The cliffs stretch for 14 kilometres along the coast of County Clare. From the top you can see ocean as far as the eye can reach - the next land in that direction is North America, about 5,000 km away.
The cliffs are made of layers of stone, like a giant stack of pancakes. Each layer was laid down by ancient seas, one on top of the other, over 300 million years ago - long before the dinosaurs.
Thousands of seabirds nest on the cliff faces. Puffins, with their bright orange beaks, dig burrows in the grassy tops in summer. Below them, guillemots and razorbills crowd onto the narrow ledges. The air is full of swooping and calling.
On a sunny day the cliffs glow gold above a deep blue ocean. On a windy day the waves crash so hard that the spray rises hundreds of metres in the air. The Cliffs of Moher are one of the most-visited natural places in Ireland.