The city was founded on November 30, 1987 as a "Science City." It is home to more than 60 research institutes, including the University of Tsukuba, the KEK high-energy research center, and the main research center of the NASDA space agency.
The world's fair (Expo '85) was held there in 1985, and is commemorated by a full-scale rocket in the city park.
Tsukuba was incorporated in 1987 by merging five villages and towns in Ibaraki prefecture into one of Japan's "science cities," designated to relieve metropolitan density through systematic relocation of prominent research and educational facilities to less congested regions of Japan.
With 45 national research and academic institutions, plus approximately 230 laboratories operated by domestic and foreign corporations, Tsukuba currently is home to 12,000 researchers, 2,800 of whom hold doctorates.
Tsukuba has achieved worldwide recognition as a major scientific and technology center, and has striking demographic, economic, academic, cultural and geographic similarities to Irvine.