The Mark Twain House and Museum in Hartford, Connecticut, was the home of Samuel Langhorne Clemens (Mark Twain) and his family from 1874 to 1891.
The building was declared a National Historic Landmark in 1962.
It is reputedly haunted by four women: a woman in black, a woman in white, a maid, and little girl. Also sighted is the figure of an African-American man.
Other phenomena include cold breezes, children's laughter, female voices and the smell of cigar smoke.
Pictured left is the Mark Twain House courtesy of Makemake.