Arecibo (Observatory) -the biggest in the world
Construction of the radio telescope was launched in 1960. The original purpose of the telescope were study the Earth's ionosphere. Author of the idea of construction: Cornell University professor William Gordon
The world's largest
Assembled the largest motorcycle in the world where you can ride
Trucker from Utah built the largest amateur telescope in the world with a mirror diameter of 1, 8 meters
The world's largest tree house
New and interesting
When I ordered a takeaway and brought IT here...