Microsoft has yet again updated the Windows 7 themes gallery with new theme. Castles of Europe is a new theme for Windows 7 which is based on the scenic locations in Europe. This free theme for Windows 7 brings to your desktop some of Europe’s most beautiful châteaus, fortresses, and castillos. It also includes architecture from Scandinavia, France, Spain, and the UK. The theme comes with 21 high resolution wallpapers to customize your desktop.