Grab your keys and hit these trails and routes made for driving, not hiking. Enjoy a leisurely jaunt and cover as much ground as you want at your own pace.

Soak up the stars on the Astro Trail in Tucson

Tucson and its dark skies draw stargazers from around the world (Image credit: JGalion / Getty Images)

With its dark skies and renowned observatories, Tucson is the perfect spot for stargazing and learning more about celestial bodies. The city's new Astro Trail helps visitors "nimbly navigate" between astronomy attractions like the Kitt Peak National Observatory, Flandrau Science Center and Planetarium and Oracle State Park, said Condé Nast Traveler . Download the digital guide to map your route and leave plenty of time for stops like the Mt. Lemmon SkyCenter, which offers an "intim

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