4. Creation of symbolic characteristics and realization of amenity space

Creation of symbolic characteristics and providing of amenity space were realized. The taken measures for designing consideration are as follows.

Proposal of Japan’s first ventilating tower design opened as amenity space for citizens and retaining wall design making the best use of material

• Application of the landscape designing with symmetrical twin towers on banks
• Application of 360 degrees full round landscape design with expressive characteristics
• Application of low-cost design making the best use of concrete material

Shaft designing with
symmetrical twin towers on banks

Shaft designing of 360 degrees full round landscape
with expressive characteristics

Retaining wall design making
the best use of concrete material

View of right bank shaft upper
section with highly artistry design

Providing amenity space where
people can enjoy beautiful sunset
of Japan sea and the Sado island

View of the Minato Tunnel
left bank entrance/exit