I have an album called 'The Best Looking Movies Ever Made' on Facebook and I'm sharing it here as it might be useful to people interested in fine art and photography or to those who simply appreciate excellent visuals in movies. And it goes without saying that these movies, if available on blu-ray, are excellent showcases of high-def video.
Do note that by 'best looking movies', I don't mean 'movies with excellent visual effects'. See this as a list of movies which have unique but beautiful visuals which were not only path-breaking at the time of their release but have also stood the test of time and can always be considered great movies based on their visual excellence alone.
Now, on to the list which is in no specific order.
THE BEST LOOKING MOVIES EVER MADE
300
The visual style is very,very unique and it was inspired from the artwork of Frank Miller, one of the most influential artists of recent times. The movie itself might not be a classic, though.
2001 : A Space Odyssey
Has a super-clean and almost lifeless look but still is very beautiful.
Alaipayuthae
One Indian film the visuals of which will stand out even amongst the best in the world. Also, a great showcase of interesting places to visit in India.
Avatar
Most people would say this is THE best looking movie ever. I would not quite agree with that but it certainly deserves a place in this list.
Baraka
Shot with a purpose-built 70mm film camera which lends exceptional quality to the breathtaking images from around the world.
Barry Lyndon
Kubrick borrowed a 0.7F lens built for NASA and shot this movie entirely with natural light to recreate the look of old European oil paintings.
Fight Club
The movie that pioneered the 'gritty, dirty yet pretty' aesthetic that has been very popular ever since.
Hero
An excellent specimen of wuxia films. Notice how costumes and environments are colour matched and how composition is always centered. Usually, the opposite of this (contrasting colours and thirds composition) is used in movies.
Sin City
The creators wanted to make a film that's truly 'black and white' and not 'some shades of gray'. Like, '300' this movie's look too was inspired from Frank Miller's artwork.
Citizen Kane
Like 'Barry Lyndon' is a European oil painting in motion, 'Citizen Kane' is a Norman Rockwell painting in motion. The thing to look for is how everything on screen is in sharp focus thereby allowing multiple scenes and subjects to occupy the same frame.
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Here are some more places where you can find which movies have excellent visuals. (These resources contain huge lists and are quite a pain to go through.)
Academy Award for Best Cinematography - Wikipedia, the free encyclopedia
Film features: The 60 Best-Looking Films Ever | TotalFilm.com
By the way, my list is incomplete, so please give your valuable recommendations.
Do note that by 'best looking movies', I don't mean 'movies with excellent visual effects'. See this as a list of movies which have unique but beautiful visuals which were not only path-breaking at the time of their release but have also stood the test of time and can always be considered great movies based on their visual excellence alone.
Now, on to the list which is in no specific order.
THE BEST LOOKING MOVIES EVER MADE
300

The visual style is very,very unique and it was inspired from the artwork of Frank Miller, one of the most influential artists of recent times. The movie itself might not be a classic, though.
2001 : A Space Odyssey

Has a super-clean and almost lifeless look but still is very beautiful.
Alaipayuthae

One Indian film the visuals of which will stand out even amongst the best in the world. Also, a great showcase of interesting places to visit in India.
Avatar

Most people would say this is THE best looking movie ever. I would not quite agree with that but it certainly deserves a place in this list.
Baraka

Shot with a purpose-built 70mm film camera which lends exceptional quality to the breathtaking images from around the world.
Barry Lyndon

Kubrick borrowed a 0.7F lens built for NASA and shot this movie entirely with natural light to recreate the look of old European oil paintings.
Fight Club

The movie that pioneered the 'gritty, dirty yet pretty' aesthetic that has been very popular ever since.
Hero

An excellent specimen of wuxia films. Notice how costumes and environments are colour matched and how composition is always centered. Usually, the opposite of this (contrasting colours and thirds composition) is used in movies.
Sin City

The creators wanted to make a film that's truly 'black and white' and not 'some shades of gray'. Like, '300' this movie's look too was inspired from Frank Miller's artwork.
Citizen Kane

Like 'Barry Lyndon' is a European oil painting in motion, 'Citizen Kane' is a Norman Rockwell painting in motion. The thing to look for is how everything on screen is in sharp focus thereby allowing multiple scenes and subjects to occupy the same frame.
-
Here are some more places where you can find which movies have excellent visuals. (These resources contain huge lists and are quite a pain to go through.)
Academy Award for Best Cinematography - Wikipedia, the free encyclopedia
Film features: The 60 Best-Looking Films Ever | TotalFilm.com
By the way, my list is incomplete, so please give your valuable recommendations.