This live feed is on the Royal Mile for the wedding:
As the name suggests, the Royal Mile is approximately one Scots mile long, and runs between two foci of history in Scotland, from Edinburgh Castle at the top of the Castle Rock down to Holyrood Abbey. The streets which make up the Royal Mile are (west to east) Castle Esplanade, Castlehill, Lawnmarket, High Street, Canongate and Abbey Strand. The Royal Mile is Edinburgh Old Town's busiest tourist street, rivalled only by Princes Street in the New Town. During the annual Edinburgh Festival, the High Street becomes the city's central focus, and is crowded with tourists, entertainers and buskers. On the left is the High Court of Justiciary, Scotland's supreme criminal court. On the right, about one-third of the way down from the Castle toward the Palace is Parliament Square, named after the old Parliament House which housed both the law courts and the old Parliament of Scotland between the 1630s and 1707 (when it was adjourned by the Act of Union) Parliament House is now the home of the Court of Session, Scotland's supreme civil court. St Giles Cathedral, the High Kirk of Edinburgh, also stands in Parliament Square.
By the West Door of St Giles is the Heart of Midlothian, a heart-shaped pattern built into the setted road, marking the site of the former Tolbooth (prison). From the point of its demolition, locals used to spit on the site of the prison. The prison had been described by Sir Walter Scott as the "Heart of Midlothian", and soon after demolition it occurred to the city fathers to place a heart on the site. Locals still spit on the Heart (aiming very specifically for the centre). The legend has been "cleaned up" by tourist guides who claim the spitting is for good luck, but it is really the same as it was, a good old-fashioned disrespect for authority. On the left, opposite St Giles', is Edinburgh City Chambers, where the City of Edinburgh Council meets. On the right, just past the High Kirk, is the Mercat Cross from which royal proclamations are read, and election results announced.