This site offers panoramic images with descriptors of the location being covered. This is a great tool for students to be able to see many of the actual place that a studied event occurred at in World History.
"AirPano is a non-for-profit project focused on high-resolution spherical panoramas shot from a bird’s eye view. Being the largest resource for 360° aerial panoramas in the world – by geographical coverage, number of aerial photographs, and artistic and technical quality of the images, AirPano has already photographed over two hundred most interesting locations on our planet. There are nearly two thousand 360° panoramas on our website at the moment."