This is the world's biggest bridge. Its tallest support stands at 341 meters tall, just below the Empire State Building. But it is so much more spectacular to see than it. Although it isn't that old it is hard to see how it would have been built at such an extreme height.

This was originally designed as a radio antenna that would cover the whole of France. Then it was said to be too much of an eyesore and was set to be demolished. But that day never came. and now it is visited by over a million people a week.

This is an ancient Roman warrior's arena to test their strength. It was built for the emperors entertainment. That was its purpose. Now it stands in ruins, but it's still visited by millions. It is giant and beautiful.
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Probably the most commonly known and most popular of them all. The ancient Egyptian pyramids. And theres not only one, there's three. Tombs for emperors built so giant it was hard to forget them. A series of catacombs winds through the pyramids, some only kneeling height and they all end up in a tomb. this takes gravestones to a whole new level.

Not realised until air travel was invented, these lines in the desert remained undiscovered. Now they are not known well by many people. These Aztecs designed and drew lines that can be seen as images from space. the most famous is the Nazca spider.

The Hummingbird

and The Monkey

All of the Nazca images have a design flaw. The monkey has a fourth finger on his left hand and the spider has a foot on one leg. nobody quite knows why this is done but it definitely gives some inspiration.
(sorry about the 1st picture im trying to fix it)