Toompea Castle built
1201 CE.
Shown on the map at 59.436°, 24.737°.
Toompea castle (Estonian: Toompea loss) is a medieval castle on Toompea hill in the central part of Tallinn, the capital of Estonia. In modern times, it houses the Parliament of Estonia (Riigikogu).
Text from the Wikipedia article Toompea Castle, licensed CC BY-SA 4.0.