Incorporation of DNA into nano-object design provides a unique opportunity to establish highly selective and reversible interactions between the components of nanosystems. Assembly approaches based on the nano-object's addressability promise powerful routes for creation of rationally designed nano-systems for the development of novel magnetic, photonic and plasmonic metamaterials. DNA provides a powerful platform due its unique recognition capabilities, mechanical and physicochemical stability, and synthetic accessibility of practically any desired nucleotide sequences. Recently, strategies based on DNA programmability for a pre-designed placement of nanoparticles in one- and two-dimensions using scaffolds have been demonstrated [1, 2]. However, in three dimensions, where theory predicted a rich phase behavior[3, 4], experimental realization has remained elusive, with nanoscale systems forming amorphous aggregates.