[4] The mountain's former sharp peak and readily distinguishable shape made it a reliable landmark for bearing checks when sailing in and around Manila Bay during the early days of navigation.

[5] It was conical in shape with steep sides deemed "inaccessible",[7] topped by distinct rock formations that resembled horns, (Tagalog: sungay), hence the name.

Mount Sungay was destroyed with the 1979 construction of First Lady Imelda Marcos's Palace in the Sky, a mansion originally intended as a guesthouse for former California Governor Ronald Reagan, who never arrived.

[8] The People's Park in the Sky, in now poised at the top of Mount Sungay, the highest point of the Province of Cavite.

The park stands on a 4,516 square metres (48,610 sq ft) of solid ground and provides a 360-degree view of Cavite and the bordering provinces of Batangas and Laguna, to as far as Manila with a straight-line distance of about 50 km (31 mi).