|Located In||Monte d'Or|
|Chapter Accessible||Chapter 3: The Battle for Monte d'Or|
|No. of Hint Coins||11|
|South Exit||Ledore Mansion|
The City Hall is a location based in Monte d'Or, seen in Professor Layton and the Miracle Mask. During the events of the game, this is the base of operations for special task force tasked with investigating and apprehending the Masked Gentleman. The road to the City Hall connects the Racetrack and the Ledore Mansion.
The City Hall is a large two storey brick building, with windows of varying sizes lining the building. A flight of stairs leads up to the building's entrance, and bushes decorate the path leading to it. A large sign is displayed at the front of the entrance.
 Areas of Interest
The City Hall's reception is the main room in the building. The player often sees Michelle here complaining about the incompetency of the police force, or Mayor Billson himself. In the UK version of the game, the name is lengthened to "City Hall Reception".
The reception area includes a large counter, with chairs behind it. There are many cabinets and noticeboards seen around the room, and in front of the counter lies a small bookcase with a teapot laid on top.
 Briefing Room
The briefing room is the room used by the special task force while they are in pursuit of the Masked Gentleman. This is where strategy meetings and interrogations involved with the case are held. In the UK version of the game, it is known as "Police HQ".
The briefing room contains many rows of wooden desks each with three chairs behind them. Windows line both of the side walls, and a large bookcase is seen at the back of the room. A projector lies in the first row of desks.
Chapter 3: The Battle for Monte d'Or
Professor Layton, Luke and Emmy head to the City Hall after they are informed of a special task force being put together there. With Mayor Billson's approval to assist in the investigation, they make their way to the briefing room, where they meet with Leonard Bloom, Inspector Grosky and Sheffield.
Soon after their arrival, their strategy meeting begins, discussing some of the Masked Gentleman's previous miracles. They first discuss the incident of people turning into horses, where they figure out that accomplices of the Masked Gentleman had set horses into the street while a bright light blinded the onlookers. The second incident involved paintings coming alive, and was deduced that the characters from the paintings witnesses saw were again accomplices to the Masked Gentleman, and vanishing paint had been applied to the paintings in order to make it look like those characters had come out of the paintings. The final incident involved people being set on fire and being found unharmed later that day. The team figure out that the people that were involved were asked to stay away from the Gallery Plaza, and that expertly crafted mannequins took their place.
 Characters in the Area
- Mayor Billson
- Inspector Grosky
- Leonard Bloom
- Alphonse Dalston
- 039 - A Hat of Tiles
- 040 - Crossed Connections
- 042 - Couple at the Café
- 043 - Evenly Matched
- 071 - Evenly Matched 2
- 072 - A Cup of Tiles
- 111 - Holiday Snaps
- 112 - A Duck of Tiles
- 118 - Evenly Matched 3