The club meets on the last Thursday of every month is a dilapidated palace.

dilapidated : (of a building or object) in a state of disrepair or ruin as a result of age or neglect.
neglected : suffering a lack of proper care.
regenerated : (of a living organism) grow (new tissue) after loss or damage.
renovated : restore (something old, especially a building) to a good state of repair.
furnished : (of accommodation) available to be rented with furniture.


Antonym of dilapidated is renovated