During the postwar economic miracle, Tokyo's population boomed and land prices soared. Workers who could not afford housing near the center of the capital pushed outward, creating rings of unplanned sprawl with inadequate infrastructure, poor transportation access, and few public amenities. The Japanese government feared the problem would only worsen. In 1965, planners proposed Tama New Town as a controlled alternative: a massive, centrally designed residential community in the Tama Hills, roughly thirty kilometers west of central Tokyo. The Housing and Urban Development Corporation, Tokyo Metropolitan Housing Supply Corporation, and the Tokyo Metropolitan Government jointly oversaw the project. The original plan called for a population of 342,200 across a designated area of 2,892.1 hectares. Construction began in 1966, and the first residents moved in when the initial phase opened in 1971.

Tama New Town was designed with an almost mathematical precision. Twenty-one neighborhoods, each containing between 3,000 and 5,000 housing units, each served by two elementary schools and one junior high school, each centered on a neighborhood hub with shops, a police box, a post office, and medical clinics. Several neighborhoods cluster around a commuter rail station, forming districts that connect directly to Shinjuku Station in central Tokyo via the Keio Sagamihara Line and the Odakyu Tama Line. More than ten railway stations serve the development. The JR Nambu Line and the Tama Toshi Monorail Line add further connections. Despite its enormous scale, Tama New Town is not its own municipality -- it straddles the pre-existing boundaries of four cities, each administering its own section under the jurisdiction of the Tokyo Metropolis.

The designated center of Tama New Town lies around the Tama Center Station complex, in the municipality of Tama. From the station, Parthenon Avenue stretches southward -- a broad thoroughfare famous for its elaborate winter illuminations. The avenue leads to Parthenon Tama, a massive cultural center perched on a hilltop and nicknamed after its Greek counterpart for that elevated position. Inside is a free museum documenting Tama New Town's own history. Behind the building lie Tama Central Park and a neighboring Shinto shrine. The surrounding blocks contain retail complexes, hotels, and Sanrio Puroland -- the indoor theme park dedicated to Hello Kitty and Sanrio's other characters. It is a neighborhood where a monorail glides overhead, families shop in modern arcades, and a theme park mascot is the area's most recognizable resident.

Tama New Town achieved international fame not through urban planning conferences but through animation. Isao Takahata's 1994 Pom Poko used the development's construction as its central drama, following communities of tanuki as their forest habitat is systematically cleared. The film made Tama New Town a symbol of Japan's tension between modernization and nature. A year later, Yoshifumi Kondo's Whisper of the Heart, also from Studio Ghibli, set its gentle coming-of-age story in the neighborhoods near Seiseki-Sakuragaoka Station on Tama New Town's eastern edge -- though the film depicted the area as more developed than it actually was at the time. In 2022, director Yui Kiyohara's film Remembering Every Night turned the development itself into a protagonist, its ensemble cast drifting through Tama's streets and parks. That same year, novelist Charles Stross set his novella Escape from Yokai Land inside Sanrio Puroland, where a supernatural Hello Kitty threatens to become a kaiju.

Tama New Town today is a mature community facing the challenges of aging infrastructure and an evolving population. The earliest apartment blocks from the 1970s now stand alongside newer commercial developments like Greenwalk Tama, which opened in Hachioji in 2007. Sixteen university and college campuses call the development home, including Chuo University, Tama Art University, and Tokyo Metropolitan University, giving the area a youthful energy that counterbalances its graying residential towers. FM Tama G-Wind broadcasts community news on 77.6 MHz, and Tama Television provides cable and internet service. The Wakabadai Station area in Inagi has seen rapid growth following the completion of Tama New Town's final construction phase, with multiple retail complexes and a planned cultural center featuring a 400-seat auditorium and library. Fifty years after the first residents arrived, the planned city is still planning its next chapter.