Classic

Geometric wallpaper is a classic for reasons we know to be true; that geometric patterns have been showing up in design for thousands of years. However, where it becomes trendy is in the "colors of the moment" color palettes. Color palettes come and go over time so, when selecting a geometric wallpaper, if you want it to stand the test of time, choose classic colors that never go out of style. However if you are all about color and trends, go for it! Just knowing you might want to reselect in a couple of years for the next "it" thing! Kerry Staley, Hamtil Construction

Craze

I think there are some timeless characteristics of geometric wallpaper, but wallpaper in general seems to really reflect trends and what's popular. It's a great way to incorporate a trend into a space. Kathleen Grim, Srote & Co Architects

Wallpaper has enjoyed a huge revival in the last few years, and geometric patterns have absolutely played a part in that. However, I would classify geometrics as more of a trend or craze. I'm sure they will always play a part in contemporary design, as well as "Mid-Century Modern,” but to truly stand the test of time, I'd stick with a trellis or "Tree-of-Life" design any day! Teddy Karl, The Great Cover-Up

Geometric wallpaper is craze worthy, albeit a nod to a fun, less fussy moment in time. Geometric motifs pay homage to its Mid-Century Modern roots of the 1950’s -1970’s. A more “classic” design harkens back to nature with depictions of birds, flowers, trees, leaves and fruit. Although modern, repeating patterns came out of nature's images as well, they’re often organic in shape and not quite as bold as their opposing geometric designs. All that being said, if your design style leans MCM, by all means go bold with a geometric wallpaper! If you’re worried about its lasting impression, try one accent wall with good quality peel-and-stick paper. Natalie Pinson, Creative Endeavors

Both

Geometric wallpaper encompasses a wide range of designs, so it could be either. Wallcoverings that appear random or have multiple saturated colors can feel very trendy due to the instability of the pattern and can imbue a space with a sense of chaos. A classic choice would be a pattern with a smaller scale and repetition like David Hicks' Hexagon wallcovering. Keeping the wallcovering tonal with hints of color or metallics have a lasting style! Molly Archeski, Srote & Co Architects