Suggest a theme for company website.

I have been tasked with redesigning the website of a small architectural firm. I’ve used WordPress for a simple blog, but have no coding experience, just basic html. Looking for suggestions on a theme that is easy to maintain into the future, needs minimal modification to build a site that will primarily use pages, not posts, and allows extensive use of photographs of the many projects that the company has. The basic layout of the site will be a static home page, links to static project pages, with links from there to individual project pages with text blurbs and lots of photographs.
Needs to look professional. Thanks for any suggestions.