Gluggafoss, also known as Merkjárfoss, is a stunning two-tiered waterfall in South Iceland that's part of the Merkja river. What makes this waterfall stand out is its unique window-like features where the water flows through. With a height of around 174 feet, Gluggafoss is a must-see for waterfall lovers exploring the Ring Road. You can even hike to the top for a different perspective or enjoy a picnic by the picturesque Merkja river. Don't forget your camera for some amazing shots!