Stockholm’s metro system is considered to be one of the most unusual and beautiful in the world.
According to a new campaign from Expedia, Swedish playwright August Strindberg once declared that "art cannot continue to be exclusive to just some people, because then it won’t be long lived."
This prompted a discourse among a group of local artists, who campaigned for the decoration of Stockholm's metro stations, which now serve 500,000 passengers daily.
The art was intended to raise social questions around the likes of women’s rights, inclusivity, and deforestation.
From paintings to sculptures and even entire stations that look like real caves, the work is pretty incredible.
In an effort to shed some light on the stunning art displayed across the Swedish capital's metro system, Expedia has created an interactive campaign titled Underground Art, which allows you to take a virtual tour of some of the most uniquely designed stations.
We've picked a selection of the most breathtaking photos from what could certainly be the world's most impressive underground art gallery.
Thorildsplan station features pixelated tiles on the walls and characters from popular video games.
The platform along Tensta station displays the word "brotherhood" in 18 different languages. It symbolises multiculturalism and inclusiveness.
Birgitta Muhr designed large bronze tulips at the Högdalen metro station to help plant a smile in the minds of people waiting next to them.
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