The two magic towers Abel entered belonged to two rich advanced wizards. The former was Wizard Cliff, the head of the Kingdom of St. Ellis's central intelligence force. The tower that he currently lived in provided him a large-sized teleportation circle and a defensive mechanism that was very difficult to breakthrough.
The other owner was Wizard Kilmer. Whilst serving as the backbone of the Assassin Union, the richest organization in all of the Holy Continent, Abel was pretty certain that there would be a lot to his private collection.