Melrose, Illinois, United States

Lock No. 21, Melrose, IL, USA

Natural • Recreation

Visitor Center, Melrose, IL, USA

Government

Lock & Dam No. 21, Melrose, IL, USA

Haulage Unter Shelter, Melrose, IL, USA

Control Stand Shelter, Melrose, IL, USA

Lock and Dam 21, Melrose, IL, USA

Smoking Shelter, Melrose, IL, USA

Central Control Station, Melrose, IL, USA

Workshop, Melrose, IL, USA

Auxiliary Lock, Melrose, IL, USA

Scooter Shed, Melrose, IL, USA

Ranger's Storage, Melrose, IL, USA

Guard Wall, Melrose, IL, USA

Esplanade, Melrose, IL, USA

Mississippi River, Melrose, IL, USA

Upstream Guide Wall, Melrose, IL, USA

Intermediate Wall, Melrose, IL, USA

Lockman's Shelter, Melrose, IL, USA

Lock & Dam 21 Recreation Area, Melrose, IL, USA

Lock Canal 21, Melrose, IL, USA