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)
Richard Siward (d.1311) the constable of Dumfries Castle in 1306. After Robert the Bruce killed John Comyn, he captured several English-held castles including Tibbers. Siward was arrested along with several other English officials. Richard from his first marriage had four children, those known are Richard and John. He married secondly Mary, the widow of Simon Fraser (d.1291) and they had no issue. Richard Siward (d.1311) Richard Siward (died 1311), Lord of Kellie, was a 13th-14th century Scottish noble. He was the constables of Wigtown, Dumfries and Kirkcudbright Castles in 1292. Richard was captured at the Battle of Dunbar on 27 April 1296 and