ha (67 acres) of amenity grassland, alongside 51.4 ha (127 acres) of built environment. The estate also includes the Queen's Campus in Stockton-on-Tees.
One of the major public attractions in Durham City is the 10 ha (25-acre) Botanic Gardens, established (on the current site) in 1970, with over 80,000 visitors annually. As of 2021, the university estate contains over 380 buildings with a floor area of 424,600 square metres (4,570,000 sq ft), including 189,400 square metres (2,039,000 sq ft) of residential area in 170 residential buildings (not including the independent St Chad's and St John's colleges, which are not owned by the university). The insurance reinstatement value was estimated as close to £850 million in 2014.
=== Durham City ===
Durham City is the main location of the university and contains all of the colleges and academic departments. The Durham City estate is spread across several different sites.
==== The Peninsula ====
The Bailey and Palace Green form the historic centre of the university and contain five colleges as well as the departments of music, history, classics and ancient history, and theology and religion, the Institute of Advanced Study, Palace Green Library (housing the university's special collections), the archaeological museum, the Durham Union Society, and the Assembly Rooms Theatre. The Bailey is linked to Dunelm House, home of Durham Students' Union in New Elvet, by the university's Kingsgate Bridge.
==== Elvet ====
The Elvet area contains the departments of English studies and philosophy along with the school of modern languages and cultures in the faculty of arts as well as departments of sociology and sport and exercise sciences of the faculty of social sciences and health. While many of the departments are in converted houses, the Elvet Riverside complex is home to the school of modern languages and cultures and parts of the department of English studies. Durham Students' Union is based in Dunelm House, just north of Elvet Riverside, linked to the peninsula area by …
