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,
Lower Sugarloaf Key the Atlantic side with Upper Sugarloaf Sound and Park Key in the center. Although smaller in area, than Upper Sugarloaf Key, it is more densely populated and is also called Sugarloaf Shores. It has Sugarloaf Lodge and restaurant, an airport and a volunteer fire department. The Sugarloaf Key Bat Tower was built in 1929 and is listed as a historic site. The tower was put there by a man named Perky to control the mosquito problem in the Lower Keys, but when the bats were put in, they flew away, never to return. Mr. Perky intended to found a city