History of the world's tallest buildings to be tall, but its true height is not known. For thousands of years, the Great Pyramid in Egypt was the tallest "structure" in the world, but the Great Pyramid is not considered a building since it is not habitable. The earliest structures now known to be the tallest in the world were the Egyptian pyramids, with the Great Pyramid of Giza, at an original height of , being the tallest man-made structure in the world for over 3,800 years, until the construction of Lincoln Cathedral in 1300. From then until the completion of the Washington Monument (capped in 1884)
63 Building 63 Building The 63 Building (Korean: 63 빌딩 or 육삼 빌딩), officially called 63 SQUARE (formerly Hanwha 63 City), is a skyscraper on Yeouido island, overlooking the Han River in Seoul, South Korea. It was designed by Harry D Som and Helen W Som, principals of Som and Associates of San Francisco. (The building has been falsely attributed to the SOM design firm, which is inaccurate.) At 250 meters (819 ft) high, it was the tallest building outside North America when it opened in July 1985, and remains the tallest gold-clad structure in the world. It stood as South Korea's