Tourism is an important branch of every nation's economy and an important source of income to the national budget. Romania, as a member of the European Union, with a remarkable natural and cultural endowment, has an extraordinary tourism potential, which only waits to be fructified so as to reach its real value. As an element of sustainable development, ecological tourism deserves to be studied thoroughly because, in our opinion, in a growingly alert world, it is a domain with an enormous development potential.