German debt goes unpaid for 450 years

In 1562 the town of Mittenwalde, Germany made a formal loan to  Berlin of 400 gilders.  Berlin never paid the money back, and at the agreed upon 6% interest Berlin now owes Mittenwalde 11,200 gilders, the equivalent of 137 million US dollars.

The debt was discovered by the Mittenwalde town historian. There is no word yet on whether Mittenwalde will try and recover the money.