Architecture

Remarkable observation tower functions like an oversized sundial

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The Sun Tower is located in Yantai, China. Its design is inspired by the area's ancient history of Sun worshiping, as well as its famous watchtowers, which were used to warn of possible attacks from the coastline
OPEN Architecture
The Sun Tower is located in Yantai, China. Its design is inspired by the area's ancient history of Sun worshiping, as well as its famous watchtowers, which were used to warn of possible attacks from the coastline
OPEN Architecture
The Sun Tower reaches a maximum height of 50 m (164 ft)
OPEN Architecture
Structurally, the Sun Tower consists of white concrete which has been sculpted to respond to the changing seasons
OPEN Architecture
The Sun Tower's outer concrete shell is connected to light tubes, which will channel natural light into the interior during the daytime
OPEN Architecture
The Sun Tower's basic form is now complete and it's expected to open to the public sometime in 2024
OPEN Architecture
The Sun Tower will feature a library and observation point toward its top, offering excellent views of the coastline
OPEN Architecture
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OPEN Architecture has already proven itself skilled at turning imaginative renders into real buildings with its Chapel of Sound and is now doing so again with its upcoming Sun Tower. The project is nearing completion and will pull double duty as both an observation tower and a remarkable sundial-like structure that marks the changing seasons.

The Sun Tower reaches a maximum height of 50 m (164 ft) in Yantai, eastern China. It's situated on the beach, a stone's throw from the sea, and is inspired by the area's history of Sun worshipping, as well as its famous watchtowers, which were once used to warn the Chinese Emperor of possible seaborne attacks.

Structurally, the building is made up of white concrete, which has been carefully shaped to respond to the Sun's trajectory. Round holes on its exterior are connected to a series of tubes, which channel natural light into the interior during the daytime. At night, its windows will be illuminated in a way designed to look like a starry sky. In addition to the building itself, its landscaping is very complex and will respond to the Northern Hemisphere's Spring and Fall equinox.

"A specially designed water channel cuts across the plaza – a ruler of time – this is the straight line that the shadow of the Sun Tower will follow on the day of the equinox," explained the firm. "A series of elliptical rings are set in the pavement pattern; the intersections between the rings and the water channel mark the building shadow's footprint at specific hours on the equinox day. At one of the outer rings, a series of fountains were designed to celebrate the 24 Solar Terms of the Traditional Chinese Calendar; on normal days they are synced with high and low tides."

The Sun Tower's outer concrete shell is connected to light tubes, which will channel natural light into the interior during the daytime
OPEN Architecture

The interior will include exhibition space, multiple meditation spaces and a library and viewing point near the top. There will also be an outdoor theater on ground level, which OPEN says will have superb acoustics thanks to the tower's sculpted shape.

The Sun Tower's basic structure is now complete – indeed, with excellent timing, OPEN actually carried out the topping out ceremony during the Northern Hemisphere's recent Summer Solstice. Work is ongoing to finish it off and it's expected to open to the public sometime in 2024.

Source: OPEN Architecture

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3 comments
CraigAllenCorson
Every time that I read about something out of China, I become more impressed with that nation's society and culture.
John Hogan
This is great to hear about! Bored time in a shopping centre back in the day led to read random magazines in the library, including the Australian "Owner Builder". That alerted me to building with the sun, moon and weather in mind. Ever since then I've toyed with ideas for houses and larger structures that act as sun dials, perhaps with fun little windows to let the sun in on specific times, days etc. Seeing this design is so cool.
Bob Flint
Will this integrate with the rising sea, to create power, or possibly focus sunlight, or just another waste of time and resources?