Nimbus D'Aspremont, 2012 - photograph by Cassander Eeftink Schattenkerk

Dutch Artist Berndnaut Smilde found a way to create real clouds in an enclosed space.

Love it.

Nimbus II, 2012 - photograph by Cassander Eeftink Schattenkerk

For more projects and images check out Berndnaut Smilde's website.
Here's a link to a video of the process (in Dutch).

Spotted on Freunden von Freunden.