Tilt-Shift Photography is a technique used to create the feeling of a miniature scene. The photo is taken from above and then manipulated in Photoshop to make it look small. The photos always remind me of a miniature railroad set, like the one my mom had in the basement when I was a kid. I found a tutorial and samples on the Tilt-Shift Photography web site.
Using a photo I took in Paris, France, I gave it a try. I think the effect comes across, but there are probably better photo choices.