What is the biggest object in the world that can be seen by the public?
156878
The Great Wall of China is the only man made object seen from space, so I'd go with that
1186675
a whole big world of them
905267
From Link 1 :\n\nThe largest living insect species, by virtue of having the greatest visible body mass and probably weight, are the giant scarabs, Goliathus goliatus, Goliathus regius, Megasoma elephas, Megasoma actaeon, and the immense cerambycid, Titanus giganteus. No clear winner can be declared on the basis of objective data, the candidates being nearly equal in this regard, but a visual comparison of all of them, side by side and scaled to maximum known size, may convince one otherwise. The heaviest weight reliably reported for any insect is 71 grams for the protected giant weta, Deinacrida heteracantha, of New Zealand.\n\n\nFrom Link 2 :\n\nThe Heaviest Insect: A Goliath Beetle from tropical Africa, weights in at 3 1/2 ounces.\n \nThe Heaviest Water Insect: The Giant Water Bug of South America, tips the scales at nearly two ounces.
1121817
What would you class as big?
84134
It's huge, and believe me HUGE!
1042316
Largest by mass is the skin.\n\nLargest by area are the lungs.\n\nThe small intestine doesn't even rate a mention by any standard.
844462
As big as the sun , Because it is the biggest star yet found .
880895
you mean tomb?\nwell, the pyramids of Egypt are thought of as tombs. so they are the biggest ever.
578266
largest with all the ice\n\n2nd largest without all the ice
841306
About a 1000 Megatons!
297732
Largest: Blue whale (Balaenoptera musculus)\nSmallest: Bumblebee bats (Craseonycteridae)
1108340
the world cup is the largest and the most watch.  The olympics is very big as well
25352
For me, on a scientific level, the most beautiful thing(s) in this world are the glaciers.  They are absolutely beautiful to see and the history and stories they tell us of this planet's past are immeasurable.
861642
That's the Arecibo radio telescope in Puerto Rico.  It isn't aimed - it can only observe objects that pass overhead.  It has a small area overhead it can see, and as the Earth turns, we see different things with it.
766232
The blue whale. It has been dubbed the largest animal that has ever lived on Earth; it bigger than even the biggest dinosaurs. It is on average between 80 and 100 ft. long. Females are bigger than males. The largest ever recorded when measurements were accepted world wide was 102ft. But befor there was standard world wide measurement, whaler claimed to have recorded a 108 foot blue whale, and a 110 foot blue whale; but scientist aren't sure how accurate those last two measerments are.\nThe baby is aslo the largest baby in the world.
533299
the pyramids.\nit shows that slaves can create wonders. we shouldnt look down on anyone
532387
Which harbour bridge are you talking about? My guess is that no matter which large harbour bridge you are talking about, they are massive structures, and as such command a lot of visual space, and therefore become famous.  Eiffel tower, because of its mass, statue of Liberty, Sydney or Auckland harbour bridges, to name just a few large man made objects, because of their size tend to be more famous than say a small object crossing a creek, say