This sounds like an absurd question, I know, but when I go to:
There isn't a download link! I'm sure it used to be there :-/
Here's what I see:
Scrolling further just has more features. No link!
Safari on Windows is no longer supported by Apple.
Safari 5 (from 2010) is available via Apple's KB. The original page no longer exists, but the EXE is still hosted.
According to 9to5mac, it seems that have Apple decided to stop producing Safari for Windows, so Safari 5 is all that's likely to be available moving forward.
Update: As mentioned at Geek Dashboard, better use a cross-browser testing tool if you just want to test your project UI. With this, you will have the latest version of Safari running right in your favorite browser.
The Windows version was discontinued.
As of 2016-09-29 version 126.96.36.199 is available from Apple here: http://appldnld.apple.com/Safari5/041-5487.20120509.INU8B/SafariSetup.exe
As of 2013-06-14 version 5.1.7 is available from Download.com here: http://download.cnet.com/Apple-Safari/3000-2356_4-10697481.html?tag=mncol;1
There is no link to Safari for Windows because Apple stopped making it. If you want a copy of Safari for Windows you have to download the installer somewhere, or retrieve it from your backup.
Update: This link still works: SafariSetup.exe
Like the others have said, Apple has ceased development for it. The latest Windows version is 5.1.7 and you can find it in several places including wordsoftech.com (https://www.wordsoftech.com/download-safari-for-windows/)
It will give you warnings galore, that its not the latest most secure browser, but if you must run it for some reason - there it is.
You have two options to still use Safari on Windows PC.
Since it is not safe to use dated version, the cross-browser testing tool is the best way if you just want to test your projects.
However, if you still want to install the last supported version of Safari, you can find the download link to Safari for Windows here.
Warning: Don't use the old version of Safari as your daily driver. It is not secure and pain to your eyes.