I've been playing around with Photoshop, trying to find ways to create those reflecting, kaleidoskopic images without manually resizing and rotating images. This was eventually achieved by using embedded images - there is an origin file, one that is cropped to a triangle, one that reflects the first triangle and the final image, which combines the triangles in a hexagon. Voilá, now I only needed to swap the origin image and the final file would update. This enabled me to play around with many different source images. In a second step, I combined two images with different scales and even added some transparency.
This is the "City" series.
Ah, yes, I've used cities in different contexts now, aerial images and streets also. But this series has more focus on the street level and views along alleys and avenues.
Kaleidoskope - City I
Kaleidoskope - City II
Kaleidoskope - City III
Kaleidoskope - City IV
Kaleidoskope - City V
Kaleidoskope - City VI
Kaleidoskope - City VII
Vertigo!
Kaleidoskope - City VIII
Kaleidoskope - City IX
Kaleidoskope - City X
Kaleidoskope - City XI