Simple boss arena : r/Terraria

I made a huge arena in vanilla terraria but dont know what to do with it, because no boss or event really needs this much space. Any ideas on what to do?

Fantasy Boss/Event Arena : r/Terraria

We made a Plantera arena so big, that the middle is no longer jungle and she gets enraged, thus harder :p : r/Terraria

Terraria ios 1.2.4 Boss Farming/Fighting Arena (Easy to build)

As promised, an Update to my Arena. : r/Terraria

How does my Hardmode arena look, /r/Terraria? : r/Terraria

Where do they even come from? : r/Terraria

My home base, probably the earliest I've done it : r/Terraria

just released how easy hardmode calamity bosses are with a giant arena. : r/ Terraria

An arena design : r/Terraria

Fantasy Boss/Event Arena : r/Terraria