connecting Paris and Barcelona  and features the highest bridge piers ever 
constructed.   The tallest  is 240 metres (787 feet) high and the overall height is an impressive 336 metres

 (1102 feet), making this the highest bridge in the world. 

It's taller than the Eiffel Tower . 

Interestingly,  the Mill au Viaduct is not straight.   Why?   It's because a

straight road could induce a floating sensation as you drive across it.

So, a slight curve remedies that feeling.  The curve is 20km in range.

Moreover, the road has a slight incline of 3% to improve the visibility

and reassure the driver.  An amazing engineering feat!  

What a view - 787 feet high!