The DEMO version only includes 4 pages:
https://thetunnel-art.co.uk
https://thetunnel-art.co.uk/the-tunnel-an-art-manifesto-for-the-21st-century.html
https://thetunnel-art.co.uk/projects-and-events.html
https://thetunnel-art.co.uk/thetunnelvr.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page