Built on the spot where the ancient Estonians' wooden fortress stood before the 1219 Danish invasion, Tallinn's castle served for seven centuries as the seat of power for the nation's foreign masters. Now it houses the Riigikogu, Estonia’s parliament. On one corner of the castle you can see Pikk Hermann tower with the blue, black and white tricolour flag waving above it. It’s commonly recognised that whoever’s flag flies on top of this tower is the ruler of Estonia. The pink section you see in front is actually a baroque structure added in the 18th Century. For a more castle-like view of this building, head behind it, down the opposite side of the hill. NB! Tours have been suspended.