Thirlestaine House is a Grade I listed building in Cheltenham, Gloucestershire, England.

[1] Thirlestaine House was started in 1820 by J.R. Scott (an amateur architect) for his own use.

[2] In 1838 the unfinished building was bought by Lord Northwick and extended by the addition of an extra wing to house his art collection.

His whole collection, including pictures still at Northwick, was sold on his death, intestate and childless, in 1859.

[3] Media related to Thirlestaine House at Wikimedia Commons