Fun Fact:  This building was built in  1908 as the Main Street School.  It was the first high school in town.  In 1929 it became an elementary school and was closed in 1985.

Video Clue #10 – Final instructions (scroll down on this page to read the clue and participate in an optional survey):

Written Clue:

When all your quests you did finalize,
go back where you started to get your prize!

Optional GLCA Survey: