The creation and control of nanoscale pinning media in melt-processed ternary superconductors (LRE1,LRE2,LRE3)- Ba2Cu3Oy (LRE=light rare earth) represent an important issue not only for the bulk form of these superconductors. Some of the nanometre-size defects are able to increase irreversibility field up to 14 T at 77 K, others extend the pinning performance of the material up to vicinity of critical temperature, enabling thus levitation with liquid oxygen or argon cooling. Additionally, an optimum content of MoO3 doubles the self-field super-current at 77 K, H//c-axis. Altogether, the pinning tailoring in ternary LRE-123 materials provides a flexible and reliable way to fit the electromagnetic performance with the needs of sophisticated high-temperature and high-magnetic-field applications. The research aims at such applications like super-magnets for NMR, drug delivery systems, wind power generation applications, etc. The recent experimental results on ternary LRE-Ba 2Cu3Oy materials are reviewed with a special respect to creation and control of novel types of nanoscale pinning media.