#3. Wind farm in the middle of the ocean
20 km from the coast of Denmark, you will find â€œHorns Revâ€, the biggest wind farm in the world. 80 turbines 110 m tall, capable of 160 MW
The fins are 30 m long.
IMHO, #3 is #1 in my book. I love the series of pictures they have going on there too, very nifty.