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 Knob to the top of the mountain. Sugarloaf Knob Sugarloaf Knob is a well-known summit within Ohiopyle State Park on the south end of the Laurel Ridge. This mountain has a unique profile and can easily be recognized at different lookouts in the park and surrounding area. The Youghiogheny River cuts beneath the "knob" and Laurel Hill creating a deep chasm. The highest peak in the area is the south end of the Laurel Hill Ridge as it reaches above sea level. Sugarloaf Knob is easily accessible by a park road which takes you to just below the summit. A short