Observation Tower

Observation Tower - Credit: Wikimedia Commons

The Santa Ana Observation Tower (Spanish: Torre de observación de Santa Ana), better known as the Stone Tower (La Torre de Piedra), is an approximately 30 feet tall observation tower located at the summit of Monte del Estado, Santa Ana Peak, at the boundary between the municipalities of San Germán and Maricao, within the Maricao State Forest in southwestern Puerto Rico. Read more on Wikipedia

type: NRHP
date from: 1940

Source: en.wikipedia.org