Central Plaza vs Kennecott Smokestack

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Central Plaza is a 78-storey, 374 m (1,227 ft) skyscraper completed in August 1992 at 18 Harbour Road, in Wan Chai on Hong Kong Island in Hong Kong. It's the third tallest tower in town after 2 International Finance Centre in Central and the ICC in West Kowloon. It was the tallest building in Asia from 1992 to 1996, until the Shun Hing Square was constructed in Shenzhen, a neighbouring city. Central Plaza surpassed the Bank of China Tower as the tallest building in Hong Kong until the completion of 2 IFC. Central Plaza was also the tallest reinforced concrete building in the world, until it was surpassed by CITIC Plaza, Guangzhou.

The building utilizes a triangular floor plan. On the top of the tower is a four-bar neon clock that indicates the time by exhibiting different colors for 15-minute periods, blinking at the change of the quarter. An anemometer is installed on the tip of the construction's mast, at 378 metres (1,240 feet ) above sea level. The mast has a height of 102 m (335 feet ). Additionally, it houses the world's greatest church inside a skyscraper, Sky City Church.

Source: Wikipedia

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Kennecott Utah Copper LLC's Garfield Smelter Stack is a 1,215 Ft (370 m) high smokestack west of Magna, Utah, along with Interstate 80 near the Great Salt Lake.

It was constructed to disperse exhaust gases from the Kennecott Utah Copper smelter at Garfield, Utah.

Source: Wikipedia