  We present the basic features and the activities of Japanese VLBI network
(JVN), a newly-established VLBI network with baselines ranging from 50 to 2560
km spreading across the Japanese islands, and capable of observing at 6.7, 8.4,
and 22 GHz. We show a number of results of JVN observations: 8.4-GHz continuum
images of a Giga-hertz Peaked Spectrum (GPS) source and radio-loud Narrow-Line
Seyfert 1 galaxies (NLS1s), the spatial and velocity structures of water masers
in NML Cygni as well as methanol masers in Cep A, and demonstrative
observations with the bigradient phase referencing.
