In most places, if you cross a time zone border, you’ll only go one hour forward or backward. But at this tri-country border, you can leap forward or backward two hours, depending on which border you cross.

This strange construction happens because of Norway’s hook-like shape. Some of the country’s northern end touches both Finland and Russia. The point where Norway meets Finland and Russia is not only a three-country point, but also a place where time gets weird. It’s the only place where Central European Time, Eastern European Time, and Further-eastern European Time meet.

When Norway follows Central European Standard Time, it’s GMT +1. During this part of the year, Finland is GMT +2, and this part of Russia is GMT +3. Just walking around this point and stepping into the countries will put you in a whirlwind of time zones.

Treriksrøysa is a cairn that marks the spot where the three countries meet. It’s been there since 1846, with a concrete tetrahedron showing each country’s name added in 1945.