Optical Oddities

This mill on Lake Erie appears to shrink as a viewer approaches thanks to an optical illusion.

The largest drain hole in the world.

Mysterious glowing orbs float through the desert night.

A haunted hill that supposedly defied gravity.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A large camera obscura, constructed entirely from digitally fabricated components.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

A 20th-century picture show in 3-D.