Lose yourself in a dream world of flowers and leaves: This free Windows 7 theme of photos by Russian photographer Christina Manchenko will illuminate your desktop with vivid colors and delicate details.

The grass and foliage may have faded, but not the playful spirits of the doggies in this free theme for Windows 7. Enjoy them playing in leaves, running madly over the snow, chewing on stuff, and getting frost all over their whiskers.

No one loves summer like a dog loves summer. Let the canines of this free theme forWindows 7 brighten your day as they lounge in the grass, fetch balls, and sun themselves by the river.

Twisting tree limbs are silhouetted against billowing clouds, fences stretch to dark horizons, and flocks of birds burst forth across the sky, seeming to portend doom. Also, there are cows. It’s a gothic world of mystery and foreboding in this free theme forWindows 7, featuring photos by Tracy Hymas.

The beauty of the Czech winter, from the rooftops of Prague to tracks in the country snow leading to pine forests and other scenes of natural beauty. A free theme for Windows 7.

The Czech countryside comes alive with fresh spring colors in this free nature theme forWindows 7

Gorgeous time-lapse photographs by Talha Tariq capture the twilit glamour of two great Pacific Northwest cities, Vancouver and Seattle. A free theme for Windows 7.