Gemini Observatory
The Gemini Project is an international partnership that will result in two 8. 1-meter telescopes (each telescope has a main mirror over 26 feet across. ) one telescope is located on Hawaii's Mauna Kea, and the other on Chile's Cerro Pach%c3%b3n.
http://www.gemini.edu/public/

Large Telescopes
index of the world's largest ground-based optical telescopes
http://www.seds.org/billa/bigeyes.html

Palomar Observatory
The first 200-inch ever built is alive and well in California.
http://astro.caltech.edu/observatories/palomar/

Subaru Telescope Homepage
The National Astronomical Observatory of Japan
http://www.naoj.org/

Very Large Telescope (VLT) Project
The ESO Very Large Telescope will consist of four 8-meter telescopes which can work independently or in combined mode. In this latter mode the VLT provides the total light collecting power of a 16-meter single telescope, making it the largest optical telescope in the world.
http://www.eso.org/projects/vlt/

Very Large Telescope (VLT) - Paranal Observatory
Situated at the top of Cerro Paranal, Chile.
http://www.eso.org/paranal/

Keck Observatory
Mauna Kea, Big Island, Hawaii.
http://www.astro.caltech.edu/mirror/keck/

Multiple Mirror Telescope Observatory (MMTO)
Joint venture between the University of Arizona and the Smithsonian Institute. Located in the Santa Rita range. Includes research results and public access information.
http://cfa-www.harvard.edu/mmt/