Man has exploited the energy of streams and rivers since time immemorial. The desire to use the energy of water gradually lead to the construction of small power plants. Technical buildings in the landscape had, in time, become not only its harmonic constituents, but also a cultural heritage. These unique objects have, however, not remained a folk museum, but rather functional technological units that have been in operation since their emergence at the beginning of the last century. Modern water power plants prove that their principle is timeless.