What are some of the least well-known or rarest images you've ever seen?

 New Year's Eve, 1960.

In 1904, in Seoul, Korea, a young Korean man in casual clothes and his wife.

A soldier leans out of a train window to kiss his lover. 1950.

Marilyn Monroe's 1954 US passport.

Elvis Presley during the filming of "Love Me Tender" in 1956.

President Lyndon B. Johnson is yelling at pilots to shut down their engines so that President John F. Kennedy can deliver his speech. Photographed by Richard Pipes, Texas, 1960.

Christian Bale in his teens, 1980s.

In 1848, Leo Tolstoy was 20 years old.

Salvador Dalí. It took 28 attempts to capture this perfectly timed shot. 1948. Photographed by Philippe Halsman.

A photograph of Jerry Seinfeld taken on the first day of filming for "Seinfeld" in 1989.

What are the rarest pictures you have ever seen?

 Some Animals

1. A glass-winged butterfly

2. Platypus baby

3. The Gastric Brooding Frog who gives birth to young ones through mouth

4. A rare breed of horse

5. Young one of Echidna Puggle (baby version of Jabba- The Hutt XD)

6. A rare birdy

7.

8.

9.

10.

11.

12. A rare breed of horse (Magic of Kesh Kanti ;))

13. Octopus eggs

14.

Some plants

1.

2.

3.

Some microscopic view

1. Banana

2. Plaque

3. Velcro

4. Guitar String

5. Used dental floss

What are the rarest photos of nature?

 Oh earth you, what a beauty you are. Its sumptuousness is completely elusive. His fascinating ways of keeping us entertained in whatever way he puts on his show is commendable; even for the devastating destruction you do, the consequences are pretty dazzling. Here are some natural phenomena that occur on earth, that will blow your mind-

1. Bright Neon Ocean, Indian Ocean

2. The Spotted Lake, Canada

3.Web Fields, Australia

4.Zhangye Danxia Landform Geological Park, China

5.Monarch butterfly migration, United States

6.This storm, Venezuela

7.Sail Stones, Death Valley

8. Uyuni Salt Flats, Bolivia

9. Crooked Forest, Poland

10. Floating in the dead sea

What are the rarest photos of nature?

 These are the rarest photos i found online hope you like them

1. 1 Warmth in Numbers

1. As if controlled by an aerial designer, American Flamingos in the Gulf of Mexico naturally arrange themselves into, well, a flamingo

1. These are frost flowers and they form on top of water when the air is very cold

1. shasimi to go

1. A Green-crowned Brilliant and a green pit viper look eye to eye

1. Breathe and take This male peacock looks almost as if the artist isn’t finished

1. Snowy Owl.

1. 5 Antarctica is the home of a gateway to another world.

1. A sea of King Penguins stretches out to meet the hills on South Georgia Island in the southern Atlantic Ocean

Thanks and hope you like the answer
source: google and audubon website:)