The Battle for the World’s Steepest Street: A Geographical Controversy
For decades, the title of “world’s steepest street” has been more than just a trivial curiosity; it has been a point of civic pride and a significant tourism draw. At the center of this ongoing geographical debate are two contenders: Baldwin Street in Dunedin, New Zealand, and Ffordd Pen Llech in Harlech, Wales. The quest to hold this record has involved complex surveying, international appeals, and a re-evaluation of how we measure the incline of our public roads.
The Contenders and the Measurement Challenge
Baldwin Street in Dunedin has long been celebrated for its extreme gradient, which reaches 35% at its steepest point. The street, which spans approximately 350 meters, was surveyed in the 1850s as part of a grid-pattern layout that prioritized uniformity over the natural topography of the land. It was named after William Baldwin, a 19th-century figure involved in the region’s early development.
However, the status of the street as the world’s steepest was challenged in 2019 when Guinness World Records officially awarded the title to Ffordd Pen Llech in Harlech, Wales. Measurements indicated that the Welsh street reached a gradient of 37.45%—a difference of 2.45% over the New Zealand landmark.
Resolving the Record
The transition of the title did not go unchallenged. Representatives from Dunedin argued that the method of measuring street steepness required a more nuanced approach to account for the three-dimensional nature of the terrain. The core of the dispute rested on whether a street’s steepness should be determined by its surface peaks or its central axis.

Following a formal appeal and consultation with industry specialists, Guinness World Records determined that to fairly assess the varying shapes of the streets, the gradient must be measured by the central axis. This adjustment led to the reinstatement of Baldwin Street as the record holder for the world’s steepest residential road.
Cultural Impact and Tourism
Beyond the technical measurements, both streets serve as major landmarks. Baldwin Street, in particular, has become a destination for tourists and daredevils, hosting activities ranging from pogo-sticking to riding electric scooters and drift trikes. While the debate over the record has been intense, city officials in Dunedin have maintained a practical perspective, noting that the street’s physical characteristics remain unchanged regardless of official records.
For residents, the attention can be a mixed blessing. While the street draws significant visitors, the high volume of traffic and photography can disrupt the daily lives of those living on the incline. Despite these challenges, the competition highlights a fascinating intersection of civil engineering, historical urban planning, and the global appeal of unique geographical features.
Key Takeaways

- The Record Holder: Baldwin Street in Dunedin, New Zealand, is currently recognized by Guinness World Records as the world’s steepest residential street.
- Measurement Standards: The title was reinstated to Baldwin Street after a review confirmed that steepness should be measured via the street’s central axis.
- Historical Context: The extreme gradient of Baldwin Street is a result of 19th-century grid-based urban planning that did not account for the natural slope of the terrain.
- Public Interest: The street remains a popular site for tourists, necessitating a balance between public access and the privacy of local residents.
Frequently Asked Questions
- How is the steepness of a street measured?
- According to the current standards established by Guinness World Records, the gradient is measured along the central axis of the road to ensure an accurate assessment of the slope.
- Why was Baldwin Street stripped of its title in 2019?
- It was briefly surpassed by Ffordd Pen Llech in Harlech, Wales, which was measured at a 37.45% gradient before the measurement methodology was refined.
- Is Baldwin Street still open to the public?
- Yes, it remains a public residential road and a popular tourist attraction in Dunedin.