With 20 U.S. states legalizing medical marijuana in some way, it’s becoming more and more mainstream—but only four brave states have stepped up to legalize recreational marijuana use. Even against regulatory setbacks and red tape, entrepreneurs, artisans, and green-rush adventurers are turning weed’s once-counterculture lifestyle into the country’s next big thing: canna-tourism.

Colorado, Washington, Alaska, and Oregon are all great vacation destinations, hosting a combined 16 of America’s 58 national parks. But beyond stunning scenery, these states’ recreational marijuana markets are really the best of the west.