Growing and processing cannabis takes up space — a lot of it.

Say good-bye to retail shops with pot leaf posters. Welcome to the gorgeous -- and profitable -- professionally designed legal marijuana retailers.

PORTLAND, Ore. – Forget stainless steel appliances or master suites. There’s a new selling point in some Portland real estate listings: pot plants.

Legal marijuana operations are finding space to grow and store their product by paying premium rents for warehouse space.

With recreational marijuana use on the verge of becoming legal in Maine, real estate brokers are seeing a jump in demand for industrial spaces that could become indoor marijuana farms in the not-too-distant future.

ALBUQUERQUE, N.M. (AP) -- On a patch of tribal land in western New Mexico, a company plans to build a $160 million state-of-the-art greenhouse for researching and growing medicinal plants, including marijuana.

An Eagle Point company that provides warehouse space for marijuana growers is planning a marijuana-friendly camping and RV park near Lake Selmac in Josephine County.

It's marijuana-friendly because state law allows marijuana use on private property.

"I would look and I would think to myself what can I put here? What can we do? It hit me. This could be a medical marijuana facility."

With recreational-use of marijuana set to be legalized for Californians in 2018 and with more cities in San Diego County approving medical-use, investors in the marijuana industry are snatching up properties.

Beyond the potential tax revenue that could be coming to states across the country, how will the spread of legalized cannabis affect the American landscape?