Hygieostatic Bat Roost - Credit: Wikimedia Commons
The Hygieostatic Bat Roost is located in Kendall County, approximately east of Comfort on the south side of RM 473, in the U.S. state of Texas. It was erected in 1918 on property owned by former San Antonio Mayor Pro Tem Albert Steves, who had commissioned San Antonio health officer Dr. Charles A. R. Campbell to design the structure. The shingled pyramid-shaped raised tower stands high. One dormer serves as an entrance for the bats, while the other dormers are ornamental. The lower portion of the tower allows access for humans. The concrete base of the tower is raised off the ground, facilitating wagons being driven beneath to collect the guano. Read more on Wikipedia
Source: en.wikipedia.org