Museum Building (Trinity College Dublin)

Suitably fitting for a building designed to house a Geology collection, the Museum Building was constructed from a vast number of different and contrasting forms of stone. College tradition holds that it some form of stone from every quarry in Ireland during the time of its construction was used somewhere within the building.

The Tympanum, of Caen stone. Depicts a 19th-century variant coat of arms of the College. This can also be seen on the Campanile

The exterior walls were first constructed from Calp Limestone, which were then faced with 22.86 cm (9 inches) of Ballyknockan Granite. The quoins, columns and 108 capitals, as well as the string course which can be seen halfway up the building, are all of Portland stone from the Isle of Portland, Dorset. The tympanum over the heavy wooden main door to building and which bears the crest of the college (a popular 19th-century variant, slightly different from the one currently used by the college today) is of Caen stone from Caen, France. Overall the exterior amounted to just under half the cost for the entire building.[1]

Initially Deane and Woodward had planned for the interior walls to be of rubble which would then be plastered over. However, in early 1855 they submitted a design change to the Board, deciding instead to use Caen Stone, and the Board agreed. However, when they had learnt that only two thirds of the stone had arrived the Board rescinded this permission. After strong argument from Deane, on 4 May they Board overruled their prior decision and agreed to the use of Caen Stone.

The large domed central hall once again makes heavy use of Irish stone. The Romanesque arches between each column use alternating yellow and red stained blocks which sit upon bases and capitals of heavily carved Portland Stone. The central staircase and floors of the upper balconies are also made of Portland Stone. The original floor was composed of Yorkstone flagstones, further Portland Stone, Welsh Ffestiniog stone, with black squares of black slate, however this floor later relaid.

The main entrance hall of the building houses fourteen full columns and eighteen half-column made of Irish Marble, although the only true marble is Connemara Serpentine. There had been some problems sourcing the materials needed to have every column complete, which after more petitioning from Deane resulted in the half columns. The only non-Irish stone used in the columns is a dark red Serpentine from Ruan Minor, The Lizard peninsula area of Cornwall.[1]

The known stone from which the columns are made of include:

• Lizard Serpentine from Cornwall, England,
• Connemara Marble from Barna and Clifden in Galway,
• Cork Red Marble from Baneshane, Little Island and Midleton in Cork,
• Armagh Marble from Armagh in Northern Ireland,
• Clonony Marble from Clonony in Offaly,
• Galway Marble from Menlo in Galway,
• Mitchelstown Marble from Mitchelstown in Cork,
• Kilkenny Marble from Kilkenny,
• Castle Caldwell Marble from Castle Caldwell, near Belleek, Fermanagh in Northern Ireland

Some of the interior room designs by Deane and Woodward were never realised, as the official college architect John McCurdy had convinced the Board otherwise.

College records from May 1860 mention of how the smoggy atmosphere had adversely affected the stone. After years of laying behind sooty deposits the ashlar of the building had become obscured. In 2010 a three-year conservation programme of the Museum Building was begun. Once finished in March 2013, many of the carvings which were almost invisible had been restored to their past state.