British explorer Chris Brown has completed his yearslong mission to visit the Earth’s ‘poles of inaccessibility’—the most remote spots on each continent. The 64-year-old internet entrepreneur and former petroleum engineer has traveled to the farthest points from the sea or land on every continent, including Africa’s central point in the Central African Republic and Antarctica’s icy expanse.

Brown’s journey to Africa’s central point required a helicopter and government soldiers for security. He visited the spot in 2021, enduring dense jungle and potential threats from rebels, bandits, and poachers. The U.K. government had warned against travel to the region due to instability.

Some of Brown’s expeditions involved arduous waits and logistical challenges. In Antarctica, he spent nearly a month stranded due to storms, reading science fiction and helping repair vehicles and tents during the delay. He made two trips to the continent before successfully reaching the pole of inaccessibility.

Brown’s journey began in 2018 when he was on Mount Everest for an expedition to hold the world’s highest-altitude dinner party. There, he learned about the concept of the ‘pole of inaccessibility’—a spot farthest from the continent’s edges. After researching, he discovered that few people had visited more than three of these remote locations.

“So I decided, I’ll do them all,” Brown said. His career has taken him from oil rigs in the North Sea to conflict zones near the Turkey-Syria border. His love for travel and risk has led him to remote corners of the globe, including South America, Australia, and the Arctic.

Reaching some poles was easier than others. The North American point required a simple drive from Rapid City, South Dakota, while Australia’s pole involved a 4X4 off-road trip through the interior desert. Brown used mapping software and consulted geographers to pinpoint the exact coordinates of each location.

To ensure his claims are uncontested, Brown sometimes visits multiple points to confirm his presence. In Antarctica, he traveled an additional 18 miles to a second set of coordinates. In the South Pacific, he directed his ship captain to two other points to avoid disputes over his visits.

Brown is currently planning his next adventure: the Eurasian pole of inaccessibility, located in northwestern China. He hopes to reach it in the next couple of years. Once he completes the journey, he plans to celebrate only after safely returning home.

“No celebration whilst still in motion,” Brown said. “I’ll celebrate properly when we all get back home safe and sound.”