Geograph - photograph every grid square

The Bishop's Palace, built in the late 15th century by Bishop Alcock, whose family crest appears above the second floor canopy. The palace consists of two wings joined by a central hall, to which a 100 foot long gallery was added in the early 16th century.
Grade I listed. Link
In the garden is the oldest plane tree in England, planted by Bishop Gunning more than 300 years ago.

Grade I listed buildings and structures are of exceptional, even international importance. There are over 6,000 in the country. Only 2.5% of listed buildings are Grade I listed.
In Scotland the classification is Category A
Index: Link