Pisa is better known for other things, but near to it, especially on the coast, there are beautiful nature reserves.
I have spent some time there during my Easter visit to my parents.
The main attraction is San Rossore nature reserve, formerly a royal hunting estate. This is really close to town, easily reached by bycicle. Open on weekends and bank holidays, mainly.
There is also a coastal lake rich in birds, called Lago di Massaciuccoli, where it is possible to visit public bird hides.
1. Faded memories of the Kingdom
2. Shy fallow deer under the pine trees
3. Hygrophilic forest
4. Great crested grebe at Massaciuccoli
5. The Apuan Alps from Massaciuccoli (not real Alps! this is where Carrara marble is quarried)
6. Cormorants
7-9. Ducklings