Ciceros detects historical monuments and buildings around you and provides fast and pleasant audioguides.
Point your smartphone in the direction of the monument or historical building of your interest to know informations and history.
You could listen audio reviews and be guided by audio itineraries made by professional publishers.
If a place has not been reviewed yet, you can still listen to a speech synthesis from Wikipedia.
Free and paid
The application is free, most of the contents are free.
Some audio guides, judged very valuable, are sold separately at a price that can range from a few cents to a few euros.