Embed WordPress page on another site

I have a great one page photo gallery on my site (site1 – an orphan page with no links anywhere) and I want to use it on another site (site2) – as the temporary home page. Is there a way to do this?

I know that I could simply do a PHP redirect from site2 to the page I want in site1. But I want to retain site2’s domain name. Is there some code I could put into site2’s web page to use content from the page on site1?

Thanks!