"The permanent exhibition of 20th and 21st century art on three floors of Veletržní palác acquaints visitors with the development of Czech and foreign fine art during the course of the last two centuries. The extensive exhibition space in this Functionalist building is home to over 2,300 exhibits and spans an area of 13,500m2. The exhibition presents the work of leading artists in Czech fine art in monographic profiles or in a selection of key works, along with the work of foreign artists. The image of the period is complemented with examples of architecture, furniture, the applied arts, fashion, design and stage design. You will also find photographs, drawings and prints concentrated in graphic cabinets. Alongside celebrated figures we have also included artists who have been neglected in the past or are yet to be discovered. Czech art is shown through qualities which distinguish it from its international counterparts and which make it unique. The objectives of this new conception are emphasised by the inventive archectural design of the individual halls."
You should definitely visit the exposition called "The Slav Epic" which is part of Czech history. you can find out more about it en.wikipedia.org/wiki/The_Slav_Epic
Veletržní palác - Národní galerie
Dukelských hrdinů 530/47
170 00 Praha 7 - Holešovice