Museum Building, Victorian museum building at Trinity College, Dublin, Ireland

The Museum Building at Trinity College is a Victorian structure with intricate stone carvings, marble columns, and a central hall defined by Romanesque arches in alternating yellow and red blocks. Inside, it contains lecture halls and exhibition spaces for engineering, geology, and geography departments.

Completed in 1857, it was designed by Thomas Newenham Deane to house geological collections previously kept in the college's Regents House. The building marked a period when the university created dedicated spaces for its scientific holdings.

The carved stone capitals display plants from the college's botanical garden alongside references to Aesop's Fables and evolutionary science. These decorative details reflect how the institution saw itself as a place of learning connected to natural discovery.

The building stands on the south side of New Square, and its main entrance is framed by a tympanum carved with a 19th-century variant of the college crest. The 2010–2013 conservation programme cleaned soot from the ashlar and brought many carvings back into view. Look up at the 108 capitals, carved by John and James O'Shea using wild flowers gathered from the college's botanical garden near Ballsbridge.

The fourteen full columns and eighteen half-columns of the entrance hall are Irish marble, though only Connemara serpentine is true marble; the rest include Cork red, Armagh, Kilkenny and Clonony stone. Half-columns exist because Deane could not source enough material for every shaft.