On the outskirts of Tokyo’s posh Ginza district stands Nakagin Capsule Tower, an unusual structure that once held Japan’s vision for the future.

The building was designed by Kisho Kurokawa, a pioneer of the “metabolist” architectural ambition—a 1960’s movement that emphasized the idea of buildings as dynamic and adaptable to a fast-paced, continually evolving cityscape of the future.

From the outside, the tower looks like a stack of laundry machines. It is comprised of two concrete cores, 11 and 13 stories high, onto which are attached “removeable” cubes. Each cube, measuring 107 square feet, was prefabricated in a factory and then attached to the cores using 4 high-tension bolts. These capsule rooms, as they are called, are furnished with basic appliances and a bathroom the size of an airplane lavatory.

The building was built in 1972 in just 30 days. Kurokawa envisioned this building as the dawn of a new age.

Instead, Nakagin Capsule Tower became a utopia never realized. The capsules, planned for a 25-year lifespan, proved too costly to replace. The tower now stands as an anachronism in the midst of the more practical buildings that have sprung up around it.

When Kurokawa passed away in 2007, residents tired of the tower’s crumbling concrete and leaking pipes voted to tear down his masterpiece and replace it with a conventional apartment building, a plan which was halted by the 2008 stock market crash.

Photographer Noritaka Minami began chronicling the life and fate of the Nakagin Tower in 2010. In the next seven years, he returned to the building nearly 10 times. “Each time I visit the building, I learn something both about the architecture and the residents,” he says.

Some capsule owners have moved out or converted their rooms into offices, while others have chosen to renovate and remain in the one-of-a-kind dwelling.

Minami avoided photographing the tenants directly, preferring to have their presence communicated through their objects. “[The room] functions as a container of people's identity, personal interest, hobbies and taste.”

With the Summer Olympics coming to Tokyo in 2020, development has been reignited development across the city as well as the debate about the historic tower’s future.

Minami hopes the tower will be preserved as a symbol of a movement whose concepts for efficient urban living still hold relevance today. It is also a reminder of paths not taken and a future that never arrived.