  Radio continuum and radio recombination line observations of the inner degree
of the galactic center reveal a rich collection of thermal and nonthermal radio
structures: (a) A network of linear filaments that are oriented perpendicular
to the galactic plane constitute the major portion of the radio Arc at l~
0.2{\deg}. These filaments have nonthermal characteristics, show polarized
emission at 6, 3 and 2 cm, are organized over a 100 pc scale, and have a flat
spectrum. (b) A number of thread-like filaments are situated asymmetrical with
respect to the galactic plane and appear to be isolated unlike the linear
filaments which are grouped together. The polarization and spectra of these so
called "threads" are not yet known. (c) A network of arched filamentary
structures that is disorganized in its appearance constitutes the curved
portion of the Arc. Radio recombination line emission from these filaments
indicates a thermal character for the emission. (d) A very steep-spectrum ridge
of emission is seen to emerge from Sgr A. (e) The relative location of Sgr A
East, West, a cluster of HII regions and the 50 km/s molecular cloud are
discussed. Comparisons of the low and high-frequency maps show clearly that Sgr
A East lies behind Sgr A West.
