Don't Rush
The Expeditions app will still function until the end of June, 2021. So if you are currently using it, you don't have to replace it this school year. You have about seven months to search for and test alternatives to the Google Expeditions app.
Google Arts & Culture
The Google Arts & Culture app includes many of the experiences that are present in Google Expeditions. The one thing that you can't do is guide students on tours. They're on their own to find and navigate through the tours that you want them to see.
Google Arts & Culture
The Google Arts & Culture app includes many of the experiences that are present in Google Expeditions. The one thing that you can't do is guide students on tours. They're on their own to find and navigate through the tours that you want them to see.
Sites in VR
Sites in VR is a free app that features immersive imagery of notable landmarks around the world. The imagery can be viewed in VR headsets or without them. Unfortunately, there is not any audio accompanying the views in Sites in VR.
National Geographic
National Geographic's YouTube channel has more than 50 videos that are designed to be watched in virtual reality. In fact, you can find lots of YouTube videos that are intended for viewing in VR by simply refining your search to 360 or 180 VR in YouTube's search filters. See my screenshot below for more information about that.