Tony Stark later built Stark Tower on the same site, unknowingly placing it atop the hidden Watchtower. After Sentry's return, the Watchtower re-emerged before ultimately being destroyed in battle.

Like its counterpart in the New Avengers comic run, Stark Tower (a.k.a. Avengers Tower) became the base of Sentry’s Watchtower where his alter-ego, Bob, contained himself to protect the world ...

The Watchtower is the new name for Avengers Tower, and that indicates that we are getting The Sentry’s epic headquarters too. If you’re not familiar, here’s the rundown.

Tony Stark later built Stark Tower on the same site, unknowingly placing it atop the hidden Watchtower. After Sentry's return, the Watchtower re-emerged before ultimately being destroyed in battle.

Tony Stark later built Stark Tower on the same site, unknowingly placing it atop the hidden Watchtower. After Sentry’s return, the Watchtower re-emerged before ultimately being destroyed in battle.