Trinidad is a special place in Cuba and it has so much to offer from places to see in the area to party out till early morning hours. It was declared as an UNESCO World Heritage site in 1988. 

The Vinales valley is encircled by mountains and its landscape is interspersed with dramatic rocky outcrops. Traditional techniques are still in use for agricultural production, particularly of tobacco. The quality of this cultural landscape is enhanced by the vernacular architecture of its farms and villages, where a rich multi-ethnic society survives, illustrating the cultural development of the islands of the Caribbean, and of Cuba. (UNESCO)

Since the moment you set foot in Havana it impacts you. It has a completely different atmosphere than any other place. It is a place where for sure I will want to come back and get to know it better. 

download the offline maps maps.me It will help locating streets, restaurants, museums in Cuba without issues. 

It is actually a Tourist card not a real VISA. The procedure is very easy. You just need to go to the embassy with a valid passport and have  20-30Euros with you (different price per country). You could maybe check with your airline they might also help you with it.