Tokyo studio International Royal Architecture designed this seaside house with the "form of a pure white arrow".

The exterior of ISM house is completely wrapped in waterproof fiberglass-reinforced polymer.

Large double doors in both sides open a tunnel through the middle of the building with rooms either side screened by sliding glass doors.

A mezzanine bridges the gap and creates an airy upper level under the roof, uninterrupted by columns.

Glazing under the eaves bounces daylight around the upper level and spills light onto the porch and yard on each side at night.

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This is exactly the kind of cabin I want to build for myself on the land I bought in a forest near my home. The trick is I want to use the gap between the two parts of the house as a garage for my truck… and of course make it out of wood and with some nice cellulose insulation. Thanks for posting this… gave me some good ideas.
Must not have a very good “seaside” site, given its introverted nature.
Supongo que en invierno no irán porque que claustrofobia, no le gusta mirar al mar?
This is what Venturi’s work would have looked like if his work wasn’t gaudy and unattractive. ;)