Greenside, Edinburgh

This conceived a large roundabout (built) connecting over a bridge at Greenside, through a tunnel through Calton Hill to a motorway standard road on the line of St Mary Street (all unbuilt).

The building of the roundabout necessitated loss of an entire city block on the south side of Picardy Place, including Arthur Conan Doyle's house.

The incomplete structure stood for 15 years before recommencing as a smaller office scheme and the Omni Centre - an entertainment complex.

Around 1995 the bridge was revamped to join to an intended temporary tower on its east side, which had lift access to the underground car park and steps down to Leith Street.

Although the bridge was removed during the St James Quarter redevelopment, the tower on the east side of Leith Street still survives and includes the steps which now indeed go to nowhere.

The east side was "restored" around 1980 as a tax office, recreating the ground floor and basement but removing most of the chimneys.

Besides providing much improved public realm, the purpose of the £2.7 million redesign is safer crossing which has been problematic previously due to several busy junctions.

Designed by architect John Baxter and built before the turn of the 19th century, the row originally consisted of eight townhouses.

The north access section on Picardy Place was home to a statue of Sherlock Holmes, sculpted by Gerald Ogilvie-Laing, in tribute to the character's creator Arthur Conan Doyle.

It was removed in 2018 to make way for construction of the Edinburgh Trams line extension, which required the complete demolition of the north section access and parking area.

[17] A new access way, albeit a somewhat diluted version of that laid out in the 1988 plan, was built on the west side next to St Mary's RC Cathedral.

Instead of the proposed car parking, a large three-part sculpture The Manuscript of Monte Cassino created by Leith-born artist Eduardo Paolozzi was installed.

The area now forms the extended pavement in front of the Omni Centre who in 2004 held a contest for a public artwork to be designed.

At their feet, there is an encircling bronze inscription quoting the 1946 poem Dreaming Spires by Roy Campbell, from where the sculpture takes its name.