2 Willow Road is one of only a handful of National Trust properties built in the twentieth century. Designed by Ernö Goldfinger for his family, the house was completed in 1939. Located in Hampstead, London, adjacent to the heath, it has recently restarted its opening season and is open Wednesdays to Sundays. 2 Willow Road is part of a terrace of three houses. No. 2 is the largest, and features a spiral staircase designed by Danish engineer Ove Arup at its centre. The house has a concrete frame and is faced with red brick. Most alluring feature of the house, however, is its interior. The structure has been drawn into the house away from the walls to demonstrate that they are not load-bearing. Largely an open plan living space design, areas of differing functions are distinguished through varying levels and floor surfaces. For more information, visit: The National Trust.