1. The Watchtower, Justice League of America
2. Avengers Mansion, the Avengers
3. The Baxter Building, Fantastic Four
4. Titans Tower, Teen Titans
5. Professor Utonium's house, Powerpuff Girls
6. The Carrier, the Authority
7. X-Mansion, X-Men
8. Hall of Justice, Super Friends (and, later, Justice League of America)