Above the Clouds, Beneath the Stars: Pic du Midi Observatory

[ashling]

http://www.slate.com/blogs/atlas_obscura/2013/10/04/above_the_clouds_beneath_the_stars_pic_du_midi_observatory_in_the_pyrenees.html

[Ptah]

1. It housed a powerful mechanical equatorial reflector

It housed a powerful mechanical equatorial reflector which was used in 1909 to formally discredit the Martian canal theory.

[hunter]

2. Looks like a fun trip to the top...