![ALMA antenna being assembled](http://cdn.eso.org/images/thumb300y/alma-osf-hh2529-cc.jpg)
ALMA antenna being assembled
![The Moon Valley](http://cdn.eso.org/images/thumb300y/the-moon-valley.jpg)
The Moon Valley
![Crescent](http://cdn.eso.org/images/thumb300y/malin_2781.jpg)
Crescent
![Vantage point](http://cdn.eso.org/images/thumb300y/malin_7729.jpg)
Vantage point
![MIDAS user room in 1980](http://cdn.eso.org/images/thumb300y/midas-ihap-user-room2.jpg)
MIDAS user room in 1980
![Schmidt telescope control room at La Silla](http://cdn.eso.org/images/thumb300y/schmidt-tel-control-room.jpg)
Schmidt telescope control room at La Silla
![Water truck going to Paranal](http://cdn.eso.org/images/thumb300y/max_v598923s.jpg)
Water truck going to Paranal
![Silence please](http://cdn.eso.org/images/thumb300y/max_v558054s.jpg)
Silence please
![Fitting anemometers](http://cdn.eso.org/images/thumb300y/1989-armazones-mast.jpg)
Fitting anemometers
![Headquarters exterior under construction](http://cdn.eso.org/images/thumb300y/1980-eso-hq-exterior.jpg)
Headquarters exterior under construction
![Laser Guide Star Testing](http://cdn.eso.org/images/thumb300y/timm_kasper_0368.jpg)
Laser Guide Star Testing
![Arriving San Pedro de Atacama](http://cdn.eso.org/images/thumb300y/ukpress_delegation-4129.jpg)
Arriving San Pedro de Atacama
![Chaxa Lagoon](http://cdn.eso.org/images/thumb300y/ukpress_delegation-4125.jpg)
Chaxa Lagoon
![Sunrise from Paranal](http://cdn.eso.org/images/thumb300y/f-brunier-paranal-0036.jpg)
Sunrise from Paranal
![Valle de la Luna](http://cdn.eso.org/images/thumb300y/rai-alma-4889.jpg)
Valle de la Luna
![ESO HQ in Garching, 1980](http://cdn.eso.org/images/thumb300y/1980-eso-new-hq.jpg)
ESO HQ in Garching, 1980
![BBC crew at Paranal](http://cdn.eso.org/images/thumb300y/bbc-paranal-4815.jpg)
BBC crew at Paranal
![Sunset at Paranal](http://cdn.eso.org/images/thumb300y/ard-paranal-4204.jpg)
Sunset at Paranal
![Hans-Emil Schuster Receiving the Order of Bernardo O'Higgins](http://cdn.eso.org/images/thumb300y/hes_chilean_medal.jpg)
Hans-Emil Schuster Receiving the Order of Bernardo O'Higgins
![VLT Unit Telescope Underbelly](http://cdn.eso.org/images/thumb300y/govert_eso50_chile-1.jpg)
VLT Unit Telescope Underbelly
![Moonset near Chajnantor](http://cdn.eso.org/images/thumb300y/twilight-project-1526.jpg)
Moonset near Chajnantor
![Archaeological research during the construction of the REOSC factory in the early 1990s](http://cdn.eso.org/images/thumb300y/cm_sagem_1991-10-06.jpg)
Archaeological research during the construction of the REOSC factory in the early 1990s
![Part of the multi-object spectrograph FLAMES on the VLT.](http://cdn.eso.org/images/thumb300y/exoplanets_french-14.jpg)
Part of the multi-object spectrograph FLAMES on the VLT.
![The ALMA Partnership Brochure](http://cdn.eso.org/images/thumb300y/ann13024a.jpg)
The ALMA Partnership Brochure
![Van Rompuy Visits](http://cdn.eso.org/images/thumb300y/vanrompuy_2354.jpg)
Van Rompuy Visits
![Still from Matrix Workshop](http://cdn.eso.org/images/thumb300y/matrix-workshop-9050.jpg)
Still from Matrix Workshop
![Still from Matrix Workshop](http://cdn.eso.org/images/thumb300y/matrix-workshop-9042.jpg)
Still from Matrix Workshop
![Wide-field view of the sky around the young star HD 100546](http://cdn.eso.org/images/thumb300y/eso1310f.jpg)
Wide-field view of the sky around the young star HD 100546
![VLT Inauguration](http://cdn.eso.org/images/thumb300y/vlt-inaug-symp-1-edit-cc.jpg)
VLT Inauguration
![ALMA up Close](http://cdn.eso.org/images/thumb300y/duran_flickr-59.jpg)
ALMA up Close
![ALMA Antennas](http://cdn.eso.org/images/thumb300y/duran_flickr-57.jpg)
ALMA Antennas
![From Antu to Yepun (Side-by-side composite)](http://cdn.eso.org/images/thumb300y/potw1249c.jpg)
From Antu to Yepun (Side-by-side composite)
![A Digital Highway to ALMA](http://cdn.eso.org/images/thumb300y/ann12082a.jpg)
A Digital Highway to ALMA
![Still from 2012 ALMA Video Compilation](http://cdn.eso.org/images/thumb300y/ann12083a.jpg)
Still from 2012 ALMA Video Compilation
![Building the Paranal Residencia òÀÔ From Turbulence to Tranquility (side-by-side composite)](http://cdn.eso.org/images/thumb300y/potw1245c.jpg)
Building the Paranal Residencia òÀÔ From Turbulence to Tranquility (side-by-side composite)
![Poster of Caf†é & Kosmos 11 Sept 2012](http://cdn.eso.org/images/thumb300y/ann12059a.jpg)
Poster of Caf†é & Kosmos 11 Sept 2012
![Chajnantor Plateau](http://cdn.eso.org/images/thumb300y/kamphues-alma-86.jpg)
Chajnantor Plateau
![Swimming in the desert](http://cdn.eso.org/images/thumb300y/max_v506827s.jpg)
Swimming in the desert
![European assembly site](http://cdn.eso.org/images/thumb300y/max_037640s.jpg)
European assembly site
![Inspection](http://cdn.eso.org/images/thumb300y/max_364402s.jpg)
Inspection
![Transporter operator](http://cdn.eso.org/images/thumb300y/max_a170034s.jpg)
Transporter operator
![ALMA antennas ready for action](http://cdn.eso.org/images/thumb300y/emol_2_25.jpg)
ALMA antennas ready for action
![Mechanical Workshop at La Silla Observatory](http://cdn.eso.org/images/thumb300y/ehpa-7-film6-3.jpg)
Mechanical Workshop at La Silla Observatory
![E-ELT M5 support system being tested](http://cdn.eso.org/images/thumb300y/eelt-5344.jpg)
E-ELT M5 support system being tested
![The ESO 3.6-metre telescope Under Construction](http://cdn.eso.org/images/thumb300y/ehpa-1-jd-lso-005-cc.jpg)
The ESO 3.6-metre telescope Under Construction
![Early steps on the construction of the domes of the ESO 3.6-metre telescope and the 1.4-metre Coud†é Auxiliary Telescope](http://cdn.eso.org/images/thumb300y/ehpa-10-140cat-tow.jpg)
Early steps on the construction of the domes of the ESO 3.6-metre telescope and the 1.4-metre Coud†é Auxiliary Telescope
![Shared time](http://cdn.eso.org/images/thumb300y/jfs-ls-2011_8208.jpg)
Shared time
![The location of the Hercules galaxy cluster](http://cdn.eso.org/images/thumb300y/eso1211c.jpg)
The location of the Hercules galaxy cluster
![Prince Philippe of Belgium visits ESOòÀÙs Paranal Observatory](http://cdn.eso.org/images/thumb300y/eso1149a.jpg)
Prince Philippe of Belgium visits ESOòÀÙs Paranal Observatory
![Site testing station in South Africa](http://cdn.eso.org/images/thumb300y/ehpa-1-ws-south-africa-1961.jpg)
Site testing station in South Africa