REDDICK MANSION AND GARDENS aut MANSION TOURS: FRIDAY-MONDAY | 11 AM AND 1 PM PLEASE CALL FOR OTHER ARRANGEMENTS & GROUP TOURS ne of the most expensive and Cornate private homes in the Midwest when completed in 1858, the Mansion was built by businessman, politician, and philanthropist William Reddick. Home to the Reddick family for nearly 30 years, the mansion anchors Washington Square, site of the first Lincoln-Douglas debate. TELE JOIN US CHRISTMAS BY CANDLELIGHT FRIDAY DEC. 1ST AND 8TH 6:00-8:00 P.M. SEE OUR WEBSITE FOR DETAILS 100 WEST LAFAYETTE ST. | OTTAWA, IL 61350 815-433-6100 | REDDICKMANSION.ORG REDDICK MANSION AND GARDENS aut MANSION TOURS : FRIDAY - MONDAY | 11 AM AND 1 PM PLEASE CALL FOR OTHER ARRANGEMENTS & GROUP TOURS ne of the most expensive and Cornate private homes in the Midwest when completed in 1858 , the Mansion was built by businessman , politician , and philanthropist William Reddick . Home to the Reddick family for nearly 30 years , the mansion anchors Washington Square , site of the first Lincoln - Douglas debate . TELE JOIN US CHRISTMAS BY CANDLELIGHT FRIDAY DEC . 1ST AND 8TH 6 : 00-8 : 00 P.M. SEE OUR WEBSITE FOR DETAILS 100 WEST LAFAYETTE ST . | OTTAWA , IL 61350 815-433-6100 | REDDICKMANSION.ORG