Melrose, Illinois, United States

Lock No. 21, Melrose, IL, USA

Natural • Recreation

Visitor Center, Melrose, IL, USA

Government

Mississippi River, Melrose, IL, USA

Dam No. 21, Melrose, IL, USA

Intermediate Wall, Melrose, IL, USA

Auxiliary Lock, Melrose, IL, USA

Lock and Dam 21, Melrose, IL, USA

Control Stand Shelter, Melrose, IL, USA

Esplanade, Melrose, IL, USA

Haulage Unter Shelter, Melrose, IL, USA

Scooter Shed, Melrose, IL, USA

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

Central Control Station, Melrose, IL, USA

Smoking Shelter, Melrose, IL, USA

Guard Wall, Melrose, IL, USA

Ranger's Storage, Melrose, IL, USA

Downstream Guide Wall, Melrose, IL, USA

Workshop, Melrose, IL, USA

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

Upstream Guide Wall, Melrose, IL, USA