The Cinque Terre is a series of Italian villages perched along the rugged cliffs of northwest Italy between Genoa and Pisa. This amazing stretch of land literally appears to fall into the sea, and in the summer months it's crowded with tourists, most walking the trail from Riomaggiore to Monterosso, a journey that if one stops for lunch and pictures, can take most of the day.
The suggested way (and best way) to visit the Cinque Terre is to use Trenitalia, the Italian train system. La Spezia is easily reached by train from Genoa or Pisa, and from there, a local puddle-jumper makes all of the needed stops. At certain times of the year you can also view the area by taking a ferry from the port at La Spezia.
The Italian government recently made this area into a national park and there is now a very affordable fee to walk the trail; a fee that is used to maintain the site.