As cities age and population density increases there is a need for sustainable use of historic town centres for 21st century needs. Demolish historic architecture? Or rather complement it with modern architecture that respects its surroundings and the ever-increasing demands for sustainability? Our project shows that this is possible and proves it by applying it to a specific example. We have added an unconventional set of modern buildings and landscaping to the castle grounds that elegantly address a wide range of issues in the national heritage area. Working with sunlight, recycling soil, using natural water sources for ornamental and economic use, sustainable materials and respect for nature create principles for working with the historic environment and incorporating everyday life.