Many Americans drop anchor in retirement, settling down near the beach or their adult children. Others leave their old latitudes behind and set sail on the highways or high seas.

Nomadic life appeals to those who have the time and cash to make RVs or boats into mobile retirement homes. After years juggling careers and raising families, these aging Kerouacs and Magellans yearn for the freedom to explore new places while still young and healthy enough to make the trip.