The name Ladegårdså (Ladegårds Å, Ladegårdsåen) originates from Ladegården, a farm under Copenhagen Castle which was located on the south bank of the stream, roughly where the Radio House is today.

Ågade was renamed Åboulevard ("River Boulevard") while Ladegårdsvej continued to run parallel to it.

[2] Ladegårdsvej disappeared in connection with an expansion of Åboulevard and the rest of the remainder of the stream was covered in 1942.

The Functionalist apartment building Trekanten ("The Triangle") on the rounded corner of Åboulevard and Rosenørns Allé was designed by Kay Fisker.

16 commemorates an accident that occurred on the night between 26 and 27 November 1812 when a carriage with five women and a boy, on its way from the country house Rolighed into town, fell into the water at Ladegården.

Tradition had it that a pointed granite stone was installed in the water at the site of the accident to commemorate the event.

When Ladegårds Å was filled to create the current Åboulevard, this memorial was installed between the trees on the boulevard at the site where it formerly stood in the water.

[10] The artwork City Wall (Bymuren) is designed by Morte Stræd and was installed in connection with the creation of three new urban spaces between the bicycle bridge Åbuen and Rantzausgade in 2011.

[11] The bicycle bridge Åbuen was installed in 2008 as part of the Nørrebro Route, a section of Copenhagen's network of super bikeways.