Sugarloaf Mountain and Urca Hill Natural Monument Mountain, then an island, on 1 March 1565. The site was chosen to guard the entrance to Guanabara Bay, and the mountain was important as a signalling point. A landfill connected the island to the mainland in 1697, and various buildings were erected to defend the territory, but the Urca urban neighborhood was only built 300 years after the city was founded. The Sugarloaf Mountain and Urca Hill Natural Monument was created by the city of Rio de Janeiro by municipal decree 26578 of 1 June 2006. The objectives are to guarantee green spaces for leisure in a natural area,
Sugarloaf Mountain (Florida) south to Highlands County. The mountain, really a ridge with rolling dome-like peaks, rises abruptly from the surrounding flat terrain. Its prominence is thought to be , with its highest peak having a local prominence of approximately relative to the surrounding ridge. Despite not being the highest point in Florida (which is Britton Hill near the Alabama border, the lowest high point of any U.S. state), Sugarloaf Mountain's summit is the most prominent peak in the state, and in a national ranking, is more prominent than the most prominent hills in both Louisiana and Delaware. Prior to the 20th century,