I’ll go from top to bottom =)
Search box needs a search icon on the right, nothing too eye-catching, but make it clear what that input box does.
I don’t think where you are is relevant on the homepage. It takes up valuable space on the initial viewing. Sure, bring it into lower level pages, but a homepage should tell you its the homepage without actually telling you xD
Your featured area has a double black border on the right, but a thin light one on the left, just a bit of pixel level detail you may want to adjust there.
I’m unsure that the line between the header, and columns does anything. Try removing it and narrowing the space between the text and headers. I just feel that line overcomplicates things for no gain.
Consider adding pictures to the four columns, they’ll brighten the design up =)
Your footer lacks legal copyright information that every site owner should want to have.
Apart from that, nice work =)