Continuous scroll themes?

Is there a theme that allows me to create a website with pages that appear as a continuous scroll on the homepage, rather than or in addition to a menu?

e.g.
http://johnandsonsoysterhouse.com/#about-1-2
https://omnicommons.org/

Or are these single pages with complex formatting?

In other words, how do I use wordpress to create pages similar to the ones above?