Officially known as the Hanhwa 63 City and also referred to as 63 Square, the building designed by American firm Skidmore, Owings & Merrill is the tallest golden-colored building in the world and was once the tallest building outside of North America. It’s a particularly noticeable structure, even from across the Han River and especially when crossing the nearby bridges. Within the building, there are a slew of attractions such as a variety of restaurants, an aquarium named 63 Aqua Planet, the 63 Sky Gallery which provides panoramic views of the city, a wax museum and an IMAX theater. Of the attractions, the 63 Sky Gallery is one of the most loved for its collection of art and its price.