You will never find better trdelnik than Skalický trdelník.

The production of trdelník has a long tradition in the Slovak town of Skalica near the borders with Czech Republic. The original recipe was brought to Skalica at the end of the 18th century by the Transylvanian cook József Gvadányi, a retired Hungarian general. The original recipe was later improved by the inhabitants of Skalica to its final form now known as Skalický trdelník.
The civil association Skalický trdelník was founded at the end of 2004 with the goal of keeping the tradition of the original open fire Trdelník production. The name trdelník comes from trdlo (originally a wooden tool for pounding or stamping materials in a stoupa, a hollowed-out log), the wooden stake the cake is wrapped around for cooking which gives it its traditional hollow shape.

https://en.wikipedia.org/wiki/Trdelník