I stand in legions, yet alone I grow, My children fall but never truly go. I've witnessed empires, outlived king and squire. I die standing up, yet feed the floor. What am I?

A bird we all know, whose name means winged finger. This has been dead for a very long time, and it starts with a letter not needed. It’s on display all over the world; you just have to go see the exhibit.

Note - The solution is missing al at the end because it too long. A major anniversary this summer, though my European friends likely are not impressed and my Asian friends likely think, that’s all?

I have no seeds and I have no bloom, I use tiny spores to fill the room. I lived with the T-Rex and ancient beast, On shadows and moisture is how I feast. Put me in the sun and I will burn, Toward the window is where I turn. I’m a common houseplant called a...?

I’m raised without hands, carried without feet. You’ll find me in structures both ancient and modern, yet I leave no mark behind. I can be a simple melody or layered with harmonies. I’m chosen specifically for important milestones or Ordinary days. Remove the focus on Him, and I cease to be me.