Dave Cadman enters the treehouse he helped construct on Cobbosseecontee Lake in Monmouth. The building was featured on a cable television show Friday.

Beams and joists hold up the treehouse.

Windows in the treehouse's second-floor bedroom offer sweeping views.

Dave Cadman beside the stairwell inside the treehouse.

Dave Cadman stands in the dining area inside the treehouse. The room has a full-size gas fireplace.

The view from the dining area inside the treehouse. The building has two bedrooms, a kitchen and a living room with a gas fireplace.

The exterior of the treehouse on Cobbosseecontee Lake in Monmouth.