Siddhartha Art Gallery was established by art-patron Sangeeta Thapa, and internationally recognized artist Shashikala Tiwari, on September 27th, 1987 as a contemporary art space and meeting point for national and international artists.
The Gallery was intitally located in Pratap Bhawan Kantipath. In 1997, the Gallery relocated to the Baber Mahal Revisited complex. The Siddhartha Art Gallery has been active in the promotion of contemporary Nepalese art and has strived to introduce international perspectives of art to the Kathmandu community. Over the years artists from India, Pakistan, The Netherlands, Bangladesh, Sri Lanka, Syria, Palestine, Afghanistan, South Africa, Mauritius, Taiwan, China, Jordan, Canada, France, Austria, Australia, Finland, Aruba, Curacao, Cuba, Iran, Italy, Malaysia, Japan, China along with the Autonomous Region of Tibet, Korea, Belgium, Germany, the United Kingdom, and the United States have held their exhibitions at the Gallery.
Over the 35 years, the Gallery has organized more than 500 exhibitions. Some have been landmark events: the retrospective exhibitions by the late Amar Chitrakar, Karna Narsingh Rana, Shashikala Tiwari, Ragini Upadhya-Grela, Uttam Nepali, Shashi Shah, and the late Tej Bahadur Chitrakar. Siddhartha Art Gallery launched 'Celebrating Line', the first-ever exhibition of drawings in the capital, a powerful anti-conflict exhibition by the eminent artist from Pokhara, Mr. Durga Baral, and an exhibition by the celebrated Bombay based artist Laxman Shreshta. The Gallery has also organized exhibitions of Nepali artists in UK, India and Pakistan.
In addition, Siddhartha Art Gallery has held exhibitions of up and coming artists, photographic exhibitions, organized workshops in ceramics and printmaking, and has conducted lectures by visiting artists. Installation art and new media experiments have also been represented at the Gallery. Community art projects such as Khulla Dhoka, Nirantar Khulla Dhoka, and Shanti Art For Hope Project which brought together artists, poets, and individuals from different ethnic, religious, and social backgrounds to express the need for dialogue at a time when the nation was going through a political impasse. The Gallery also collaborated with GTZ on a community art project "Whose City is this?" that brought poets, writers, and urban planners together.