Green Park is a royal park in Westminster near Buckingham Palace. The Blighter Ivan Bunbury is trying to set up shop here in his Bounty Hunt.
Legend says Queen Catherine ordered its flower beds removed after Charles picked flowers there for another woman. In 1840 Edward Oxford fired twice at a pregnant Queen Victoria's carriage here and missed.
Ivan Bunbury, hand-picked by the Westminster Templar Lilla Graves, is scouting the park for a Blighter outpost on royal ground from which to harass the Queen, and his crew is spread out looking for a spot. Grab him as Jacob or Evie, force him into a carriage and drive him to Abberline. Abberline is pleased if he arrives in one piece and disgusted if he does not.
Charles II created it so he could walk from Hyde Park to St. James' Park without leaving royal land.
10 Downing Street
10 Downing Street is the Prime Minister's home and office in Westminster. In 1868 Benjamin Disraeli lives here, and Jacob's work as his bodyguard in Sequence 7 starts outside the house.
Admiralty
The Admiralty is a government office on Whitehall in Westminster, one of the period buildings you can climb and read about in the in-game database. No memory centres on it.
Banqueting Hall
The Banqueting Hall, later the Chapel Royal, is a 1622 hall on Whitehall in Westminster and a database landmark in Syndicate. It is the only surviving part of the old Palace of Whitehall.
Blue Anchor Alley
Blue Anchor Alley is a Blighter stronghold in Westminster run under Lilla Graves, one of two in that borough. Freeing it lets the Rooks set up there instead.