To embed a Google virtual tour, please follow the steps below.
Go to https://apps.facebook.com/static_html_plus/ and log in to your Facebook account. Then, click on the green button, Add Static HTML to a Page.
Select the Facebook page from the drop-down that you wish to embed a virtual tour.
Click on the page from the drop-down menu and click Add Page Tab.
On Google Maps, locate the business with the virtual tour you want to embed. Click on one of the 360 tile thumbnails to access the Google virtual tour.
Please note: the embed option is only available from Google Maps, and not from the knowledge graph.
Once you have found your Google virtual tour, click on the settings sprocket icon to access the settings menu. Select Share or embed image.
Click on Embed image and copy the iframe code in the dialog box that appears. Select the largest size in the embed menu or adjust the iframe width & height as needed.
Visit your Facebook page and you will see a new tab on the bottom called Welcome. Click on it and select the large green button, Set up tab or Edit tab.
Delete the default content and copy and paste your Google virtual tour iframe code.
Changing Your Google Virtual Tour Tab Name on Facebook (optional)
You may find that you want to change your tab name for your embedded virtual tour(s). To do this, click on Actions from the top settings menu and select Edit name and image. Give your tab a name and be sure to save.
Changing Your Facebook Tab's Position (optional)
In addition to editing the tab name, you may also want to adjust the position of your tab on Facebook. This is done through the Facebook page you manage.
Click on Settings from the Facebook page and select Edit Page.
You'll notice on the bottom of the page is a list of your Tabs. These tabs can be dragged and dropped to rearrange the order. Once you've dragged and dropped your new virtual tour tab to its new location, Facebook will automatically save your changes.
Adding or Removing Tabs (optional)
While you don't need multiple tabs to add multiple virtual tours to Facebook (you can embed as many virtual tours into one tab alone), you may want to add more tabs in the future.
To add more tabs, navigate to your Page dashboard. Click Add a new tab.
This will open up a box to add a new tab using this application. Fill out the details as you did with the first tab you created and click Add tab now. You should now have a new tab ready to edit!
To remove a tab, this must be done through your Facebook Page Settings. Navigate to Settings from your Facebook Page and select Edit Page. You will see a list of your tabs. To remove a tab, click Settings for the tab you want to remove.
You may either turn off the tab, in case you wish to show it later or to delete it completely, click on Edit Settings. A dialog box will appear. Click (remove) to delete the tab permanently.