Portland turned a 2-foot hole into an official park with its own tree and groundskeeper

If you drive down Naito Parkway in downtown Portland, you might easily miss it. Blink at the wrong moment, and you could miss the city's smallest patch of green, a tiny traffic median barely bigger than a manhole cover. Yet Portland maintains this speck the same way it maintains its biggest parks. According to Portland Parks & Recreation, Mill Ends Park measures 452 square inches, about two feet across, with room for one tree.

A reporter's window seat started the whole thing
What makes the park unusual is that it began as a mistake. In 1946, reporter Dick Fagan watched from his office window as a traffic median was built on Front Avenue, according to the Oregon Encyclopedia. The space was supposed to hold a traffic light. But no light was ever installed there.

But Dick Fagan decided not to leave the space unused. Instead, he planted flowers in the hole and wrote about it in his column, which he named "Mill Ends," the term for scrap wood from sawmills. In his column, the small plot developed a story of its own, including leprechauns said to inhabit the place. Even before the authorities officially declared the place as the world's smallest park, Fagan already called it so.


How Portland turned a practical joke into an official park
Fagan tended the tiny plot until his death in 1969. The Oregon Journal, the paper he wrote for, kept publishing for years afterwards, finally closing in 1982 when it merged with The Oregonian. On St. Patrick's Day in 1976, the city officially designated Mill Ends as a municipal park.

That detail matters because the city still maintains the park today. The tiny plot is maintained on the same schedule as the city's ball fields and hiking trails, with staff assigned to water, weed, and replant it each season.

Since then, according to Portland Parks & Recreation, the park has featured a tiny pool with its own diving board, a miniature Ferris wheel brought in by a full-sized crane, statues, and occasional neighborhood snail races. Locals decorate it for holidays the way they might decorate a front porch. Construction forced two relocations, most recently in 2021 to make room for a protected bike lane, and Mill Ends kept its official status both times.

Portland lost the record but not the point
Mill Ends held the Guinness World Records title for smallest park from 1971 until February 2025, according to Guinness World Records. That month, a town called Nagaizumi, near Mount Fuji in Japan, had its own park certified at 0.24 square meters (roughly 372 square inches). Because Nagaizumi's park measures only about 372 square inches, compared with Mill Ends' 452 square inches, Mill Ends had actually been the larger of the two ever since the Japanese park was built in 1988. According to Guinness, Nagaizumi's park had actually been sitting there since 1988, built after a town employee visited Oregon, saw Mill Ends firsthand, and went home determined to build something even smaller. On February 25, 2025, Guinness made it official, ending Mill Ends Park's 54-year run as the Guinness World Records holder for the world's smallest park.

Portland accepted the change calmly. Mark Ross, a spokesperson for Portland Parks & Recreation, told the Oregonian that Mill Ends' resident leprechauns were "outraged" to lose the title, per Smithsonian Magazine.

Why Mill Ends Park still matters in Portland today
Portland never had to set a minimum size for Mill Ends because the city did not officially designate it a park until later. A hole originally meant for a lamppost became an official park after the city designated it for maintenance and planted a tree there, and the city has cared for it ever since. In Portland, Mill Ends remains a small but enduring part of the city's identity.

Small park, occasional big trouble
Mill Ends Park has had its share of mishaps that only added to its legend. In December 2019, an unknown vandal cut down the park's tree, though it was soon replaced. The park has also weathered redesigns tied to road work along Naito Parkway. In 2006, it was briefly relocated to a flowerpot at the World Trade Center while the parkway was repaved, and later rebuilds gave it a quatrefoil-shaped steel form cast in concrete. Even Mill Ends' record-holder status faced a challenge from across the Atlantic: a resident of Burntwood, England, once complained to Guinness that Mill Ends wasn't large enough to count as a real park, since it lacked a fence, arguing that Prince's Park in Burntwood should hold the title instead. Portland volunteers responded by installing a small fence, just a few inches tall, and briefly stationing an "armed guard" at the site. The episode says a lot about why the park endures. It isn't really about square footage. It's about a city that decided a joke was worth defending, and then kept defending it for more than fifty years.