Topic — 6 stories
observation tower
A 20-Meter Double Helix Tower Just Rose Over a Chinese Wetland
This Unusual Observation Tower Works Just Like A Gigantic Sundial
An Hourglass Shaped Observation Tower In Sweden Satisfies The Birdwatcher In You
This dominos-inspired skyscraper could become Africa’s second-tallest tower at 70-stories high!
This observation tower features a coffee bar that hovers above the clouds for a rare view of Da Lat!
