A huge collection of free goodies from CGI Vault.
CGI Vault's textures and skyline panoramas are now free for commercial use under a Creative Commons Attribution license.
You can now get over 100 free textures of bricks, concrete, tiles, and more (most of them are tileable). The textures are available in TIFF format with diffuse, normal and height maps (2,000 to 6,000px in width).
The platform also shared 20 high-resolution photographic panoramas of the New York skyline that you can use in your projects. They are available in JPEG format, and range from around 12,000px to 50,000px in width.
You can get free files here.