hugo/docs/content/en/methods/site/Sections.md

title	description	categories	keywords	params
Sections	Returns a collection of top-level section pages.			functions_and_methods returnType signatures page.Pages SITE.Sections

The Sections method on a Site object returns a collection of top-level section pages, in the default sort order.

Given this content structure:

content/
├── books/
│   ├── book-1.md
│   └── book-2.md
├── films/
│   ├── film-1.md
│   └── film-2.md
└── _index.md

This template:

{{ range .Site.Sections }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}

Is rendered to:

<h2><a href="/books/">Books</a></h2>
<h2><a href="/films/">Films</a></h2>