is there an application for historical purposes?

Hi, Im Emilio and I am a professor on history. I want to buy an oculus this year, but also i want to know if there is an application with historical sites, monuments, etc. I want to show my students how was the acropolis or the coliseum, that would be awesome for them. As we have the app to look the sky and see constellations, would be a nice idea to see historical and archeological places trhough time. 
Thanks