Map - Ulster Museum (Ulster Museum)

The Ulster Museum, located in the Botanic Gardens in Belfast, has around 8,000 square metres (90,000 sq. ft.) of public display space, featuring material from the collections of fine art and applied art, archaeology, ethnography, treasures from the Spanish Armada, local history, numismatics, industrial archaeology, botany, zoology and geology. It is the largest museum in Northern Ireland, and one of the components of National Museums Northern Ireland'''.

The Ulster Museum was founded as the Belfast Natural History Society in 1821 and began exhibiting in 1833. It has included an art gallery since 1890. Originally called the Belfast Municipal Museum and Art Gallery, in 1929, it moved to its present location in Stranmillis. The new building was designed by James Cumming Wynne.

In 1962, courtesy of the Museum Act (Northern Ireland) 1961, it was renamed as the Ulster Museum and was formally recognised as a national museum. A major extension constructed by McLaughlin & Harvey Ltd to designs by Francis Pym who won the 1964 competition was opened in 1972 and Pym's only completed work. It was published in several magazines and was until alteration the most important example of Brutalism in Northern Ireland. It was praised by David Evans for the "almost barbaric power of its great cubic projections and cantilevers brooding over the conifers of the botanic gardens like a mastodon".

Since the 1940s the Ulster Museum has built up a good collection of art by modern Irish, and particularly Ulster-based artists.

In 1998, the Ulster Museum merged with the Ulster Folk and Transport Museum and the Ulster-American Folk Park to form the National Museums and Galleries of Northern Ireland.

In July 2005, a £17m refurbishment of the museum was announced, with grants from the Heritage Lottery Fund and the Department of Culture, Arts and Leisure (DCAL, usually pronounced as 'Dee-Kal'). In October 2006 the museum closed its doors until 2009, to allow for the work. Illustrations of historic interest of interiors before alterations will be found as nos 183 and 237 in Larmour, P. 1987. The redevelopment drew criticism from many significant figures in the architectural community and the Twentieth Century Society, especially for changes to the Brutalist character and dismantling of the spiral sequence of rooms in the Pym extension.

The museum reopened in October 2009, eighty years to the day since its original opening. Within a month over 100,000 people had visited the museum. The reopening saw the introduction of Monday closure, which has received criticism from the public and in the press. All NMNI sites are to close on Mondays. This decision is being reviewed by DCAL.