This year's tagline was "Hill to Harbor," as the event included two homes in the Bulle Rock area.
"I can't believe they are doing it for 41 years. That is a long time," observed Eric Krauss, who lives in Baltimore but does business in Harford County.
He was visiting the home of Karen Jackson and Jeff Proctor in the 600 block of South Market Street, one of several historic homes that drew "oohs" and "aahs" from dozens of visitors who crowded into the small building.
Jackson dated the home to 1907, but Proctor noted later: "We are still trying to figure out how old it really is."
The couple, who moved there in 2011, decorated the home with antiques, family heirlooms and plenty of Christmas ornaments, since Christmas is Jackson's favorite holiday.