33 Whitecross Street is a grade II listed building in Monmouth, Wales in the area of St James Square. The property was the site of an archaeological excavation in 2009, which found evidence of Neolithic (prehistoric), Roman, and Medieval activity. The following year, archaeological excavation in the square discovered the first evidence of Mesolithic human settlement in Monmouth.

St James Square is a historic square in the town centre of Monmouth, Monmouthshire, Wales. It is located at the eastern end of Whitecross Street, within the medieval town walls. The area features the Monmouth War Memorial and the controversial, historic Indian Bean Tree. In addition, in 2010, the square was the site of discovery of the first Mesolithic artefacts in Monmouth. St James Square is lined with numerous listed buildings. It is also home to the Monmouth Catalpa Tree.