Stockholm's subway stations make you feel like you’re in actual caves

If you ever plan to take a trip to Stockholm, Sweden's capital city, take note of the subways: they're works of art in and of themselves.

The stations are hewn into the bedrock in a way that makes them feel organic. At the same time, the layers of paint and murals add man-made, artistic touches. It's a fantastic juxtaposition between rugged and ultra-refined.

Here's a look at some of the city's amazing, cave-like subway stations:

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This metro station at Fridhemsplan shows how rough and cave-like some of the stations in Stockholm can appear.

But you can see the man-made elements at many stations. The Rådhuset station features concrete columns that fit with the aesthetic of the courthouse above the station.

Note the roughly carved, ochre-colored arc, juxtaposed with the perfectly smoothed concrete that supports the ceilings.