Please take a moment to read the instructions. There are several steps that need to be taken before the Expeditions are ready to use for your classroom.
The BT for your building will receive a notification when you sign up for an Expedition. The BT will follow up with you for set up and download of the expedition you want to use.
Expeditions can be found here. (To search for a particular topic, type in your search after #GoogleExpedition in the search bar) or here. (To search select command + f, type in your search in the find dialog box on top right.)
Use this list for reference, but you can absolutely take your students somewhere none of the students have ever been. There is tons to explore!
Google Expedition Checkout #1 (20 Expedition Viewers)
Google Expedition Checkout #3 (30 Expedition Viewers)