I just found this great list of iPad apps that can be used in the classroom to go on virtual field trips around the world. It’s on this post by Edutopia and includes a list of 9 apps that explore many different subject areas. There is an Art app called Timeline -Art Museum, which includes many different artists from many time periods. There is information about each artist and multiple artworks they have created.
On the list are a few different global apps like NASA Earth Now and National Parks by National Geographics. These pas would be great when learning about the Earth and different landscapes around the world.
While this list is obviously for American schools, most of the apps could be applicable to our classroom situations. I really like how interactive they all are and how easy it would be to get all the students interested and engaged in topics that can be boring.