As Commissioner of Public Building, Bulfinch completed the Capitol's wings and central portion, designed the western approach and portico, and constructed the Capitol's original low wooden dome to his own design (replaced by the present cast-iron dome completed in the mid-1860s). In 1829 Bulfinch completed the construction of the Capitol, 36 years after its cornerstone was laid. During his interval in Washington, Bulfinch also drew plans for the State House in Augusta, Maine (1829–1832), a Unitarian Church and prison in Washington, D.C.. In 1827, he was elected into the National Academy of Design as an Honorary member. He returned to Boston in 1830, where he died on April 15, 1844, aged 80, and was buried in King's Chapel Burial Ground in Boston. His tomb was later moved to Mount Auburn Cemetery in Cambridge, Massachusetts. In 1943, a United States Liberty ship named the SS "Charles Bulfinch" was launched. The ship was scrapped in 1971.