Buildings On Mercury Close Up, In NASA Archive, Oct 17, 2013, UFO Sighting News.

Date of sighting: October 17, 2013
Location of sighting: Southern Part of Caloris Basin, Planet Mercury

Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9, 7, 6 (1000, 750, 430 nanometers) in red, green, and blue.
Center Latitude: 22.8°
Center Longitude: 156.9° E
Resolution: 1000 meters/pixel
Scale: Atget, the dark-floored crater near the right edge, is 100 km (62 mi.) in diameter.
Source Photo: http://photojournal.jpl.nasa.gov/catalog/PIA16676

I was searching for structures when I found this amazing photo which seems to have dozens for structures in it. I used my iphone 5s to re-digitalize it. This upped the quality by 5-7% giving much needed detail not otherwise seen with a screen recorder. I've been doing this for years, so please don't assume I'm a noob kid at this.

Since Atget Crater is 100km or 62 miles in diameter, we can see that these structures very from 5km across to 70km across. Thats some big buildings! SCW

Method used to up the quality a bit:
Step 1: take the photo and move to desktop
Step 2: enlarge the photo to 3-5X or about 150MB.
Step 3: use an HD camera to look at detail you would not normally see with the human eye.
Step 4: record it.