Step 1: Download the files from the link provided to you separately
Step 2: Turn off Cross-Origin Resource Sharing (CORS) on your browser.
IMPORTANT NOTE: Due to the security risk, we advise to turn off CORS on a browser that you will only be using for this purpose. Never do this do this on a browser you used daily. In the example below, we are using Firefox as reference.
Go to 'about:config' on your Firefox browser and click on 'Accept the risk and continue'
Then search for 'origin_policy' and switch if from 'true' to 'false'
Step 3: Go to your downloaded files and located 'index.html', right click and open with 'Firefox'
That's all, you can enjoy your virtual tour on your browser without internet access!