Portland’s historic Victoria Mansion has opened for the holiday season.

The brownstone mansion is a National Historic Landmark that was built between 1858 and 1860 as a summer home for luxury hotel proprietor Ruggles Sylvester Morse. The building is also known as the Morse-Libby House. This week is the first full week of its season. Its “Christmas 100 Years Past” program runs until Jan. 4.

On Dec. 13, the mansion will host a reading of Dylan Thomas’ “A Child’s Christmas in Wales.”

Andrew Harris, a Victoria Mansion trustee, will give the reading in the hallway of the grand staircase, and will interpret Thomas’ prose and put into context the significance of Thomas as a writer and his use of language.

Thomas, who wrote the poem during the 1940s, was one of the world’s most famous poets at the time. The piece captures memories of his youth.

The reading takes place from 6 to 8:30 p.m. at the mansion at 109 Danforth St., Portland. $25. victoriamansion.org; 772-4841

Victoria Mansion is often cited as an important example of the Italianate Villa-style of architecture. New Haven, Connecticut, architect Henry Austin designed it.

The mansion will be closed on Christmas and New Year’s Day.