Impressionism - Art Movement

Impressionism is an art movement that belonged to 19th century and it got originated with the help of a group of Paris-based artist and got into prominence during 1870s and 1880s.
Impressionism paintings are characterized by very small, thin but visible strokes. In short, in impressionism the artists paint the images without going in detail but colors are very bold.

Two sisters by Pierre-Auguste Renoir
There are many artists that are well known for their impressionism style. 

Some of them are:
Impressionist painting by Claude Monet