News Release

Protecting Wildlife and Heritage at SAJU

Green iguanas basking on historic fort walls, highlighting the coexistence of nature and cultural heritage.

National Park Service / SAJU Wildlife Program

News Release Date: September 25, 2025

Contact: Miguel Naveira, [phone]

San Juan National Historic Site (SAJU) is home not only to centuries-old fortifications but also to a variety of wildlife, from native and migratory birds to invasive green iguanas and free-ranging cats. These animals present both fascinating research opportunities and management challenges for the National Park Service.

The park implements ongoing monitoring, habitat restoration, and public education programs to protect biodiversity while maintaining the integrity of historic structures. Visitors can observe wildlife in designated areas, learn about conservation efforts, and participate in community initiatives aimed at preserving both natural and cultural heritage. Through these efforts, SAJU exemplifies how historic sites can balance the protection of cultural treasures with environmental stewardship.