Melrose, Illinois, United States

Lock No. 21, Melrose, IL, USA

Natural • Recreation

Visitor Center, Melrose, IL, USA

Government

Central Control Station, Melrose, IL, USA

Smoking Shelter, Melrose, IL, USA

Scooter Shed, Melrose, IL, USA

Workshop, Melrose, IL, USA

Ranger's Storage, Melrose, IL, USA

Esplanade, Melrose, IL, USA

Lock and Dam 21, Melrose, IL, USA

Mississippi River, Melrose, IL, USA

Control Stand Shelter, Melrose, IL, USA

Intermediate Wall, Melrose, IL, USA

Haulage Unter Shelter, Melrose, IL, USA

Auxiliary Lock, Melrose, IL, USA

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

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

Guard Wall, Melrose, IL, USA

Upstream Guide Wall, Melrose, IL, USA

Lockman's Shelter, Melrose, IL, USA

Downstream Guide Wall, Melrose, IL, USA