The long, Neoclassical building on the corner of Øster Voldgade and Gothersgade, opposite the entrance to Copenhagen Botanical Gardens, is Rosenborg Barracks.

It was built around the same time On the opposite side of Øster Voldgade, perched on top of the former Rosen-borg Rosenborg Bastion, hidden from the street by tall trees, is the former Østervold Observatory.

[2] It was built as a replacement for the astronomical observatory at the Round Tower to designs by Christian Hansen and now contains an interpretive centre associated with the Botanical Gardens.

It now houses the upper secondary school Gefion Gymnasium and Geocenter Danmark, a research centre under University of Copenhagen.

The last section of the street passes the Nyboder development which was founded by Christian IV to provide housing for personnel of the Royal Danish Navy.