An early 17th century house featuring elegant interiors, with richly panelled rooms and soaring staircases. The house is set on a rise, and offers superb views over the surrounding beautiful countryside. The main stair is of particular interest. It was described by a visitor in 1787 as 'unrivalled in the Kingdom'.
Treowen was owned by a succession of Catholic owners, and the troubled religious time of the 17th century is recalled in the secret priest's hiding hole on the stair landing. There are four storeys of rooms on view. The ground flooe features the kitchen, dining room, banqueting hall, and Oak Room. On the first floor are 5 further chambers, including a Long Drawing Room, with plasterwork ceiling decoration. The second floor features another 3 chambers, including the Red Room, with extraordinary rich, red wallpaper, and there are three more small rooms on the top floor.

Beside the house are formal gardens leading to a woodland area with attractive walks.