From Dublin's Facebook page:
Park of the Week (June of 2014): Smiley Park provides great open space to play Frisbee, bring a blanket and read a book, or for our corporate residents to enjoy lunch and a little outdoor time. This park features a bike path, picnic area and a shelter. This hidden gem is located at 6135 Frantz Road behind 5156 Blazer Parkway and can be accessed using the sidewalk on the west side of 5148 Blazer Parkway, or by using the multi-use path off of Frantz Road.
I found this park by accident and knew I had to hide a geocache nearby given the park's name. The easiest route would be to start from the common area of the park and travel East.
Come and get your smiley at Smiley Park!