Gullfoss is a stunning waterfall located in southwest Iceland. It's known as the "Golden Falls" because of the golden hue that the water takes on when it catches the sunlight. The waterfall is formed by the Hvítá river, which flows down into a deep crevice in two stages, creating a breathtaking sight. Gullfoss is a popular tourist attraction and is often visited as part of the Golden Circle tour. It's definitely a must-see if you're ever in Iceland!