Toompea Castle (Lossi plats 1a, Tallinn) — Ever since the German Knights of the Sword first built a stone fortress here in 1227-29, every foreign occupier that ruled Estonia used the castle as its base. The tower is a vital national symbol: tradition dictates that whichever nation flies its flag over Pikk Hermann, also rules Estonia. Today, appropriately, it’s home to Estonia’s Parliament. Each day at sunrise the Estonian flag is raised above the tower to the tune of the national anthem. Free admission.
Note: Excursions around the castle are held every day from Monday to Friday. Sessions of parliament can be watched from the public gallery.