Pictured above, the Vestervold rampart of Copenhagen, photographed in the late 1850s or 1860s
From Diary of a Seducer (in Either/Or), by Søren Kierkegaard (born 5 May, 1813; died 11 November, 1855)
'She lives near the Rampart. The location is not very favorable as far as I am concerned; on the opposite side there are no neighbors whose acquaintance one might make, and there are no public places where one might carry on observations unnoticed. The Rampart itself is little suitable, one is too exposed. If one strolls along the street below, one cannot very well walk on the side of the Rampart, for no one goes there and it would attract undue attention, but if one walks on the side where the houses are, one can see nothing. It is a corner house. The windows facing the courtyard can also be seen from the street, as there is no neighboring house. Her bedroom is probably on that side.'
—from Either/Or (1843; translated from the Danish by Gerd Gillhoff)