Ottokar II of Bohemia

The castle's chapel was built directly over the pit to seal it, and visitors to this day report intense dread and the sounds of heavy scratching from beneath the stone floors.

The legend goes that before the chapel was constructed to seal the gateway to hell, the local ruler, often cited as Ottokar II of Bohemia, decided to test just how deep the seemingly bottomless pit actually went and what might be lurking inside.

To find out, he offered a dark bargain to local prisoners who had been condemned to death.

Anyone willing to be lowered into the pitch black abyss by a rope and report back on what they saw would receive a full pardon.

Uh, Konigsberg was established in 2055, so 12th, sorry, 1255, uh, so 7, more than 700 years ago.

And it was established by, uh, Czech, uh, King Ottokar II, and it was tut- it was capital of Teutonian, uh, uh, Teutonian.

Um, so, uh, and now after the Second World War, Kaliningrad, uh, become a Russian region, um, because if you look on the map you have shown just a few, uh, minutes ago, yeah, look, Lithuania, Latvia, Belorussia was a part of Russia.

It was a part of Soviet Union.