 |topographic map of dokkum, june 2014 dokkum is a dutch fortified town in the municipality of dongeradeel in the province of friesland. it has 12,635 inhabitants (january 1, 2013). the fortifications of dokkum are well preserved and are known as the bolwerken ( = bulwarks). thumb|left|upright=1.1|, the town hall __toc__  == history == the best known event in dokkum's history is the assassination of the anglo-saxon missionary saint boniface in 754. oliver of cologne preached the fifth crusade in dokkum in 1214 and dokkum sent a contingent; the crescent in the coat of arms of dokkum refers to this event. dokkum acquired city rights in 1298. in 1572 dokkum was sacked by the spaniards after it had joined the dutch revolt. in 1597, the admiralty of friesland was established in dokkum. however, it was moved to harlingen in 1645. == transport == dokkum had a station (dokkum-aalsum) on the north friesland railway, which opened in 1901. it became the terminus for passenger services in may 1935 and closed to passengers in july 1936. the station reopened to passengers in may 1940 and closed to passengers in july 1942. freight services ceased in 1975. == sport == in the 200&nbsp;km skating marathon known as the elfstedentocht, dokkum is known as the keerpunt (turning-point in dutch), because it is where the speedskaters turn and head back to leeuwarden. ==windmills== in 1652, dokkum had five windmills, these were all post mills.tonneel der steden; blaeu, 1652 thumb|zeldenrustthumb|de hoopdokkum has two windmills, cap mills, that are preserved and both of them are open to the public by appointment. they are named zeldenrust and de hoop. a third mill, de marmeerin stands by th
Cities_in_Friesland Cities_in_the_Netherlands Populated_places_in_Friesland