Coolsville

Coolsville is a fictional city in Ohio that serves as the headquarters and hometown to Mystery Inc. Based on recent clues from the two most recent films, it can be guessed that Coolsville is located in either the Cleveland or Toledo area. The city appears to be quite large with it's many museums including one with a section dedicated to Mystery, Inc. The Scooby Doo episodes have have revealed many locations in the city. Some of which include the gang's favorite hang-out, the malt shop; the aquarium, and the beach.

Mystery, Inc Headquarters
The first base of Mystery Inc was a tree house. As seen in Monsters Unleashed, they moved into a mansion-like building. This headquarters has up-to-date technology and the building includes a lab, large surrounding yards, etc. It is a very luxurious building and has many computers. The building also contains a refrigerator.

Blake Manor
Daphne's family owns an extravagent mansion in Coolsville. In series, her bedroom was portrayed as a huge room with an even bigger wardrobe.

Scooby Doo's Doghouse
Scooby Doo's Doghouse it is located outside of Shaggy's home. The inside of the doghouse is much larger than it appears from the outside and has been shown in one adaptation to include a indoor pool, tennis court and many other luxuries.

Rogers' House
Shaggy's Home from when he is younger has been shown to be an average home with a large kitchen and a living area.

Dinkley's House
Velma's home from when she was younger is a average home except it has many of her designs and equipment.

Jones' House
Fred's Home is an average home.

Fred, Scooby And Shaggy's House
When the gang grow up they split into two houses the boys and the girls. This is seen in the Valentines episode of What's New, Scooby-Doo?. Here they make stops when they come back to Coolsville and is revealed as a modest 2-story home with a gourmet kitchen.

Daphne And Velma's House
When the gang grow up they split into two houses, the boys and the girls. This is seen in the Valentines episode of Whats New Scooby-Doo!

Doo Manor
The house where Scooby's family lives. This is usually potrayed as a big mansion but can be seen as an average sized house.

Known Landmarks
Coolsville High 

Coolsville Junior High 

Coolsville Public Library

Coolsonian Criminology Museum