What do you unlock at town hall 7?

At Town Hall 7 in Clash of Clans, players unlock several new features, including the ability to upgrade to more advanced defenses like the Cannons, Archer Towers, and the Air Defense. Additionally, players gain access to the Barbarian King hero, which adds a powerful unit to their arsenal. New troop upgrades become available in the Barracks, including the Balloon and the Wizards. Lastly, players can build the Clan Castle, allowing them to join or create clans for collaborative gameplay.