General :: Touristic App Become Visible?

It contains 2 must haves:

navigate a custom route and present some specific content along.

1. navigate a custom route

I would like to present complete tours, eg routes that i gather from a gps tracker.

Once these complete routes are created, they should be used for navigation (the loaded route should be the preferred route, instead of the fastest, shortest, ...)I cannot use plain navigation because the routes themselves are important.

2. content

while navigating, i want touristic attractions to become visible and when clicked, they should show pictures and story.Does there exist already an application i can use?