The Lock-Keeper's Cottage by Surface houses a £660,000 graduate school and research facility for Queen Mary's College in London. The new structure replaces a pump house at the junction of the local canal and Mile End Park.
A white and turquoise 'tendril' houses a staircase and bridge linking the metal-clad 'wing' with the existing cottage. Windows are positioned to capture strategic views. The project was completed in April 2005.