Google Earth

With the app Google Earth for Android you can explore any country and any place right on your smartphone (or tablet). The application is endowed with excellent responsive controls, with which you can not only zoom in / out, but also change the viewing angles. 

Google Earth for Android contains highly detailed terrain images for large cities and the "Street View" function, with which you can independently walk through the streets and quarters of the metropolis you are interested in.

Despite the presence of Russian localization, the Play Market does not officially support this program for Russia.