Explore LaSalle County History
during the 250th Celebration

LaSalle County will be the place to be in 2026 while we celebrate the United States Semiquincentennial year.

LaSalle County is part of two National Heritage Areas: the Lincoln National Heritage Area and the I & M Canal National Heritage Area, which was the first ever National Heritage Area established in 1984.

Spanning its rivers and rolling prairies, LaSalle County features 17 historic sites and museums for locals & visitors to explore.

Check out the locations and events below!

LaSalle County Museums'
Passport Weekend

February 14-16, 2026

Discover the rich history of LaSalle County during President’s Day weekend! Many LaSalle County Museums/Historical Sites will be opening their doors for the low price of $1 per person. Pick up your passport at any noted location below.

Earlville Community Historical Society

Hegeler Carus Mansion

LaSalle County Genealogy Guild

LaSalle County Historical Society

Leland Historical Society

Mendota Museum & Historical Society

Norsk Museum

Ottawa Historical & Scouting Heritage Museum

Reddick Mansion Association

Seneca Historical Guild

Sheridan Historical Society Museum

Streatorland Museum