World-Famous Structures with Astonishing Secrets

Some of the world’s most famous structures hide incredible secrets! The Sphere in Las Vegas has a sound system so precise it can deliver audio directly to individual seats without disturbing others. The Gateway Arch in St. Louis doubles as a time capsule, holding documents from the 1960s for future generations to discover. Dubai’s Burj Khalifa sways up to 1.5 meters at the top to withstand winds and even recycles condensation to water its gardens. The Sydney Opera House, inspired by orange peels, has “acoustic clouds” on its ceilings to perfect sound quality. These hidden features make these landmarks even more amazing than they appear! Credit:
Big Ben clock face: By Sergeant Adrian Harlen - https://www.gov.uk/government/news/the-sound-of-silence, OGL 3, https://commons.wikimedia.org/w/index.php?curid=64045555
Eero Saarinen: By Collection Manuscripts & Archives, Fair use, https://en.wikipedia.org/w/index.php?curid=31274816
CC BY-SA 1.0 https://creativecommons.org/licenses/by-sa/1.0/:
St. Louis riverfront: By Jefferson National Expansion Memorial Archives, https://commons.wikimedia.org/w/index.php?curid=14664715
CC BY 2.0 https://creativecommons.org/licenses/by/2.0:
View of Sphere: By zenm - https://flic.kr/p/2pB2Umf, https://commons.wikimedia.org/w/index.php?curid=146677514
Phish at Sphere: By Shelby L. Bell - https://flic.kr/p/2pNgtny, https://commons.wikimedia.org/w/index.php?curid=147954320
The Builders: By Jefferson National Expansion Memorial, NPS - https://flic.kr/p/8ZqY6B, https://commons.wikimedia.org/w/index.php?curid=44929645
CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/:
Burj Dubai Under Construction: By Imre Solt - http://www.skyscrapercity.com/showthread.php?t=584073&page=20, https://commons.wikimedia.org/w/index.php?curid=4596112
Burj Dubai 20090121: By Imre Solt - http://www.skyscrapercity.com/showpost.php?p=31070194&postcount=382, https://commons.wikimedia.org/w/index.php?curid=5771932
CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0:
MSG Sphere: By SounderBruce, https://commons.wikimedia.org/w/index.php?curid=123098848
Demag Raupenkran: By C.Stadler/Bwag, https://commons.wikimedia.org/w/index.php?curid=108485295
Demag Raupenkran CC 8800-1: By C.Stadler/Bwag, https://commons.wikimedia.org/w/index.php?curid=108484606
June 1965 Arch Construction: By Kevin William Kelly, https://commons.wikimedia.org/w/index.php?curid=67757072
Big Ben clock mechanism: By Paulobrad, https://commons.wikimedia.org/w/index.php?curid=38271803
CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0:
The Sphere: By Tomás Del Coro - https://flic.kr/p/2oUaqrt, https://commons.wikimedia.org/w/index.php?curid=136454957
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