This is a sub-page of Bloons Monkey City (Adobe Flash)/Unused Graphics.
A ton of mostly generic buildings are unused and have been since the release of the game. They have no functionality, and they were meant to be built in one of the building sections, as they have build icons.
Many updates later, premium buildings were added, which are completely different from these buildings but they are likely the successors of them. One of the premium buildings is even a remake of one in this section!
ExperimentalGardens#

A garden where 2 monkey scientists look after Venus Fly Traps and Bloonberry Bushes. If the Fly Traps look familiar, that's because they appear unused in Bloons TD 5!
Supermarket#
A supermarket with the title "MonkeySave".
Theatre#
A theatre with a monkey cosplaying as Shakespeare. Is in a completely different style from the other monkeys in this game, resembling that of Bloons Super Monkey 2's style.
Cinema#
A cinema with a projector featuring a Super Monkey. Is in a completely different style from the other monkeys in this game, resembling that of Bloons Super Monkey 2's style.
ConcertHall#

A concert with a monkey conducting an orchestra and many instruments on the seats. Is in a completely different style from the other monkeys in this game, resembling that of Bloons Super Monkey 2's style.
Gym#

A gym with a monkey hitting a punching bag outside and with dumbbells inside.
Kindergarten#
A kindergarten with a bell, and a slide outside. The art for the bell was not put to waste, as it was used for the Monkey Town Hall upgrades.
SportsStadium#

A sport stadium with a ring that has a MOAB that resembles a yellow football and red or blue seats. A similar building exists in the mobile version.
MuniciplePark#
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Updated |
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Presumably a municipal park, which are parks created by regulations to be used publicly in cities. Interestingly, an updated version of this building was added in the premium building update!
Hospital#
A hospital building. Yawn.
Consulate#
A consulate building. What more?
NightClub#
A night club building with shining lights.
PoliceStation#
A police station with a car outside.
Museum#
A museum with a dinosaur fossil outside.
MayorsHouse#
Presumably the house of the Mayor Monkey in the game's title screen.
FireStation#
A fire station.
Library#
A library with a book-like roof.

