Posts tagged concave

Grand central station NY whispering walls

Whispering Arch, Grand Central Station

A whispering gallery found in a surprising place, Grand Central Terminal in New York, one of the largest railway stations in the World,

1 Star, yawn2 Stars, OK3 Stars, interesting4 Stars, worth a detour5 Stars, worth a journey
(37 Votes, average 2.84)
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Sound mirror, Kilsnea, Yorkshire

Sound Mirrors

Acoustic mirrors were an attempt to detect enemy aircraft flying towards England in the early twentieth century.

1 Star, yawn2 Stars, OK3 Stars, interesting4 Stars, worth a detour5 Stars, worth a journey
(10 Votes, average 3.60)
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