ArtPrize Eight is winding down, and there's only one more full day to make your selection before public voting ends at 11:59 p.m. Thursday.

If you're planning to make it your mission to personally check out each of the Top 20 entries, here's a closer look at a pair of them.

"Portraits of light and Shadow" is on display at DeVos Place in downtown Grand Rapids. The artist's name is Joao Paulo Gonclaves. His fascinating piece harnesses light and shadows into pixel-portraits which are deliberately angled wood pieces.

Portraits of Light and Shadow at DeVos Place Convention Center by Joao Paulo Goncalves from Pompano Beach, Fla.

The nature of the pixel art requires viewers to put distance between themselves and the piece to be able to see the subject of the art.

ArtPrize Eight: Guide to Grand Rapids

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ArtPrize's round 2 voting begins after Top 20 finalists announced

"It doesn't matter if kids or adults visit, they all like it," Gonclaves said. "They all like to interact with the piece, turn the light on and off to see what it looks like without the shadows.

"Everybody likes to ask me questions about how the art piece works, and I like to answer all the questions."

Another Top 20 ArtPrize piece worth seeing in person is the piece entitled "Rock Around." It's located at the Grand Rapids Children's Museum.

Rock Around at Grand Rapids Children's Museum by Aaron Zenz from Spring Lake, Mich.

The piece was created by Spring Lake native Aaron Zenz, along with help from some of his family members. The entry consists of 1,000 hand-painted rocks. Five-hundred of the rocks are on display at the Children's Museum, while the other 500 have been hidden all across Grand Rapids in random locations, allowing people interested to experience an interactive scavenger hunt while enjoying ArtPrize.

"Every single rock here has a matching twin, so there's an identical rock that looks just like it that we hid somewhere in the city," Zenz said. "There's 500 rocks tucked up in the branches of trees, or down in the corner of a windowsill; they're spread all over the place, giving people a chance to play along with our entry.

"My family was thrilled when we found out that we'd made the Top 20."

"Portraits of light and Shadow" is in the two-dimensional category, while "Rock Around" is in the installation category.

The winners of both the public and juried awards, totaling $500,000, will be revealed Friday night at the ArtPrize Awards Ceremony.