The fortress wall created a fortified circle around a castle-like stronghold, and six spires connected the walls and the castle with small stone bridges. Trying to siege the castle would be extremely difficult without a significant difference in the number or strength of forces between attacker and defender. In addition to limiting how many attackers could charge at the same time, the bridges also looked like they would be easy to destroy.
There was still the ground that people could use to get to the castle, but Toz didn't see any viable entrances into the castle other than the gates leading to the bridges and spires. And if Toz had to guess, there were probably countermeasures in place to prevent attackers from flooding the ground with numbers. He didn't know, but it might be fun to find out if they get the chance.
