Slussen is one of the most complex infrastructure challenges in Stockholm.
It manages several levels of cars/busses going in every direction, a metro interchange station, a bus terminus for many bus lines, a terminus of a commuter railroad, pedestrian walkways, a big lift, and a lock for boats.
Everything in one small spot.
It is also one of the main roads through the city...
The form of Slussen that is shown here is the one that was opened in 1935, it was patched haphazardly through the decades, in 2004 a new design was announced, in 2009 a geologic survey was performed, in 2013 an archeological dig was started.
The new design of the area is planned to be completed in 2027 or so.
Now, back to the old design, it has dealt with a lot over the years, just one major example is when Sweden changed from driving on the left to driving on the right in 1967, which means that if you look on this photo you can see that cars are driving on the left.
If we turn our attention to the background of the photo, you can see some of the neon advertisment signs that Stockholm was famous for in this time, we even preserved some of the more iconic signs and they are now considered works of art and are kept lit, even if the brand they are advertising went out of business decades ago.
Finally, I just want to commend the photographer of capturing that gorgeous sunset!
Photographer is K W Gullers, it is owned by the Nordic museum in Stockholm and licensed as CC-BY-NC-ND
I have noticed that sometimes when I post pictures this way, they seem to be limited in resolution, so here is a link to the photo article on Digitaltmuseum where you can expand the photo in a better way:
https://digitaltmuseum.se/021016954715/vinterbild-en-natt-i-februari-over-trafikkarusellen-vid-slussen-upplyst