Nagoya Expo 2005 Tower
The 2005 World Exposition International
Nos. of Storeys:
50 Storeys @ 12m per
storey (600 metres high)
Building Footprint = 2 hectares
Within overall site area = 150 hectares
City, Nagoya, Japan
2000 to 2005 (projected)
"The Nagoya Expo 2005 Tower is the alternative proposal
as the vertical option to the conventional horizontal
layouts used in the previous Expos elsewhere in the world.
This proposal is currently being considered by the Expo
The Expo 2005 Committee had earlier declared that the
exhibition theme has to "express the need to reconsider
the natural world through the adoption of an innovative
attitude to urban planning, infrastructure, building design
and information, proposing new standards for quality of
life in an ecologically friendly environment".
The site is near Seto City in Nagoya in Japan and is a
150 hectare site with a pristine matured ecosystem (following
a period of secondary ecological succession). It is contended
here that to build the new Expo facilities on this site
with an expected 25 million visitors trampling over this
ecosystem will appear contrary to the declared intentions
of the Expo Committee. It will likely generate an uproar
from Environmentalists worldwide.
The vertical solution proposed here addresses the issue
of the ecological sensitivity of the site by creating
"artificial land" in the sky. In going vertical,
the proposal will preserve more than two-thirds of the
existing ecosystem of the locality.
The fundamental benefit of the vertical solution is that
it will have a smaller building-footprint at the ground-plane
(i.e. @ 2 Ha compared to that of the horizontal version
@ 150 Ha). This vertical Expo will therefore avoid extensive
land clearance and disruption to the site's existing mature
The Tower Design
The Tower will in effect be a working prototype of the
"1000m Hypertower project" mooted and researched
by the Japan's Ministry of Construction.
The tower will be 600 metres high and will have 50 segments
of platforms @ 12m height that will enable the various
pavillions to be built (up to 3 storeys) within each segment.
The tower's distribution of landuse within the 50 segments
will be on the basis of a system of "horizontal"
as well as "vertical" zoning of uses. Horizontal
zoning enables pavillions and facilities to be located
within one or more of the 50 segments of 12m height. Vertical
zoning provides for certain pavillions and facilities
to be accessible at all floors (e.g. the International
Pavillion, the Japan Pavillion, the Administration/Security/Services
The key circulation system is by
means of a spiralling monorail with its twin tracks placed
on the periphery of the tower with "stations"
at 6 segment intervals (i.e. 2 minutes travelling time
between stations). This connects to the LRT system at
the ground-plane. In addition to these, there will be
supplementary systems of elevators, escalators and inclined
travelators. However as with most Expos, there will be
a main Promenade for use by pedestrians from which all
pavillions will be accessible. This Promenade in the tower
will be in the form of a large gentle ramp that traverses
from the ground-plane all the way up to the top of the
Such a new urban development constitutes an opportunity
to test the concept of the vertical organisation and integration
of local resources, environmental demands and the specific
needs of an international exhibition. The building's operational
and environmental systems will address the challenges
of the new century giving respect to nature in a technological
response, using clean and efficient energy technologies
and recycling systems.
The intention of the Expo 2005 Tower will demonstrate
a new policy toward preservation of the natural environment
and the freeing of existing urban landscape for vegetation.
It will likely be an example for future urban expansion
spaces (e.g. the proposed relocation of the Japan Government
facilities outside Tokyo).
|Project Team :
Tengku Robert Hamzah