Perhaps the most inspiring website on the planet Awwwards names a website of the day, every day. From those winners they give out a developer award, for achievements in web development in addition to design, and once a month they name a 'Site of the Month'. They describe their awards as the awards that recognize the talent and effort of the best web designers, developers and agencies in the world.
In addition to the thousands of amazing websites you can find on Awwwards (both as winners and nominees), their blog is updated regularly with articles that highlight different areas of design and design concept. For instance you can find a list of the best websites that utilize video backgrounds, or wood texture, etc... You can also find interviews with some of the great designers and developers from around the world, and articles that are absolutely pertinent to building a successful WordPress website.
Give Awwwards a visit today, find ideas that you can utilize in your project, and get inspired to build something great!