I love finding old plaques. Most of the ones in downtown Albany were placed in 1886 as part of the City's Bicentennial. Some of the smaller plaques like this one near South Pearl Street give the original names of familiar streets.
I already knew that my street was originally called Lydius Street. In fact, one of the older deeds for my house actually gives the location as Lydius Street. But it was still great to find the old Bicentennial plaque high on the wall of a former bank.