90/100 of Stockholm’s subway stations are decorated with art — sculptures, mosaics, paintings, engravings, and reliefs by over 150 artists — much of which dates back to the ’50s.

AT 110km long, it’s said to be the world’s longest art exhibit. Check out this slideshow for a sample of what you can see if you visit.

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

Intermission
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Art in subway stations around the world

by Kristin Conard

23 colorful images of art and architecture in Oakland, CA

by Hal Amen

The story behind Cape Town’s newest street mural

by Deva Lee
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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

Intermission
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Paris’ surprising street art [PICS]

by Matt Scott
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Live in an ugly city? Encourage graffiti

by Matt Hershberger
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13 awesome street artists (who aren’t Banksy)

by Matt Hershberger
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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art

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Stockholm subway art