America’s first motel — the roadside landmark that helped launch the great American road trip — is looking for a new owner.

The historic property in the Central Coast city of San Luis Obispo, home to the original Milestone Mo-Tel, later renamed the Motel Inn, has officially hit the market for the first time in a generation.

Located just off the historic El Camino Real, the landmark is widely recognized as the birthplace of the modern motel, offering travelers a place to park their cars and spend the night decades before roadside lodging became an American staple.

The 4.21-acre parcel at 2223 Monterey Street, just off Highway 101, is being offered by Hayes Commercial Group but without a public asking price.

Highway 101 is, in many ways, the modern incarnation of El Camino Real — the old “King’s Highway,” as it was then known, that once stitched California’s 21 Spanish missions together, from San Diego to San Francisco to Sonoma in Northern California.

Laid down centuries later, the freeway still traces that same coastal corridor, carrying today’s travelers along the same historic spine the padres once walked.

Opened more than a century ago on December 12, 1925 as a labor of love from Pasadena architect Arthur S. Heineman, the Milestone Mo-Tel was built specifically for the new age of automobile travel.

Guests could pull their prized rides right up to the front doors of their motel rooms — a radical and novel idea at the time.

Heineman, who was also an inventor, coined the word “motel” by blending “motor” and “hotel,” and the name stuck. The motel was positioned roughly halfway between Los Angeles and San Francisco, making it a natural overnight stop when a day’s drive still meant exhaustion and numb buns, albeit with far less traffic than endured nowadays.

Hollywood stars, including then-newlyweds Marilyn Monroe and Joe DiMaggio, once passed through in the 1950s. The Mission-style architecture (popularized in California from the 1890s–1920s), complete with its eye-catching three-tiered bell tower and copper dome, turned it into a local landmark.

The motel permanently shuttered in 1991. Over the following decades most of the original buildings fell to ruin and were subsequently demolished. Today, only the refurbished lobby building with its bell tower and the facade of the old restaurant remain, standing behind chain-link fencing as a quiet reminder of a bygone era.

Now, the site is fully entitled for an 83-room boutique getaway featuring 27 bungalow-style guest buildings, a pool and a new sound wall. Construction permits are ready to issue, making it one of the rare rockbreaker-ready hotel opportunities.

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“There is no comparable opportunity in California,” listing broker Nolan Tooley said in a release for the property.

“This is a shovel-ready, entitled hotel site on Highway 101 in one of the most supply-constrained lodging markets on the Central Coast.”

Because the motel is listed on the City of San Luis Obispo’s Historic Preservation List, what’s left of the estate’s historic structure must be incorporated into any future plans.

For a century, the Motel Inn has waited just five miles from the foot of the steep mountain pass that is the Cuesta Grade. Someone new with deep pockets and a big imagination may finally get to bring what was once a trailblazing motel into the 21st century.

All they’ve gotta do is make an offer.