

Thomas Viaduct (Relay) — a nearly 200‑year‑old curved multi‑span stone railroad viaduct over the Patapsco River. Strong geometry, repeating arches and reflections in the water make compelling compositions. Best at golden hour or blue hour for warm light and long shadows. Access from Patapsco Valley State Park; park at nearby lots (park entry fee possible) and be prepared for a short walk and limited official parking. Trains still run — great for dynamic shots. Respect active rail lines and park/


Thomas Viaduct (Relay) — a nearly 200‑year‑old curved multi‑span stone railroad viaduct over the Patapsco River. Strong geometry, repeating arches and reflections in the water make compelling compositions. Best at golden hour or blue hour for warm light and long shadows. Access from Patapsco Valley State Park; park at nearby lots (park entry fee possible) and be prepared for a short walk and limited official parking. Trains still run — great for dynamic shots. Respect active rail lines and park/