There is a virtual tour of the medieval palace

Mark Anthony Walker, the architect who designed the Lincoln Contemporary Heritage Garden, said he drew inspiration from the architecture of the nearby Lincoln Cathedral.

He has also used the geometric lines of the nearby vineyard, one of the oldest in Europe, and the city's Roman Walls to create a lattice design.

Situated in the shadow of the vast 11th Century cathedral and sited on its walled terrace, there are spectacular views from the garden over Lincoln and the Vale of Trent.

The 19th century coach house, a Grade 1 listed building, now houses a shop and education room where sound and display panels tell the story of the Palace.

A virtual reality tour will describe the palace's history for visitors unable physically to access the entire site.

Rod Giddins, English Heritage regional director for the East Midlands, said: "The garden and new visitor and educational facilities are crucial to the regeneration and understanding of Lincoln's historic core.

"Investing in the city's important historic buildings will bring sustainable economic benefits, as more visitors come to this magnificent city."