Cornerstone16 is a web directory organized as an atlas gazette — a structured register of active websites mapped across 22 sections. The project began as a straightforward exercise: to chart what is actually live and accessible across a broad range of industries, without editorial gatekeeping or paid placement. Every entry in the atlas has been submitted by its site owner and reviewed for basic accessibility before being added to the register. The atlas is divided into 22 sections, each functioning as a correspondent's column for a distinct sector of the web. Some sections are densely populated — the Wagering Chronicle and the Open Atlas collectively account for over 300 entries — while others are more narrowly focused, covering specialist sectors with fewer but precisely documented sites. Each section carries a brief survey note on the character of the sites within it, alongside example entries to help orient new readers. Cornerstone16 does not rank sites or assign editorial scores. The register is a record, not a verdict. A site's position in any given section reflects the order in which it was submitted — nothing more. Readers are encouraged to browse by section, read the correspondent's notes, and follow entries of interest directly to the source. Submission is open and free. Any publicly accessible site may be proposed for inclusion via the submission form. The Cornerstone16 desk reviews each submission for basic criteria before adding it to the appropriate column. Sites that are no longer accessible are removed during periodic maintenance reviews. The atlas gazette format is a deliberate choice. The web is large, varied, and best understood through systematic mapping rather than algorithmic shortlisting. Cornerstone16 provides the atlas; readers chart their own course.