History of the world's tallest buildings of world's tallest building was borne by shorter buildings. St. Mary's Church in Stralsund became the world's tallest building after the collapse of Lincoln Cathedral's spire. The central tower of St. Pierre's Cathedral was tallest from 1569 until it collapsed in 1573, making St. Mary's the tallest once again. In 1647, the bell tower of St. Mary's burned down, making the shorter Strasbourg Cathedral the world's tallest building. It was not until the completion of the Ulm Minster in 1890 that the world's tallest building was again also the tallest building ever constructed, surpassing the original configuration of Lincoln Cathedral.
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