I had the great good fortune of living in Texas for a couple of years growing up. And most especially the timing was perfect because one of those years was 4th grade which is the year students learn Texas history for their social studies requirement.
There were pages of bluebonnets to be colored in! There were counties to memorize! Tribes to know! And Stephen F. Austin (and Sam Houston, among others) to idolize.
Social studies was my kind of subject, anyway, and I ate Texas history (and 4-H!) up. So last summer when we were in Austin, we went through the Texas State Cemetery — which is right in the middle of town, practically — and I was back in 4th grade…
First, though, here is the 9-11 Memorial. From the state’s website:
The 9/11 monument is dedicated to all Texans who died during the September 11 terrorist attacks and during Operation Enduring Freedom in Afghanistan and was commissioned by Governor Rick Perry in 2002 on the first anniversary of the attacks… Included in the design are two steel columns from Ground Zero that the public are encouraged to touch and examine. The columns were not altered in any way and were recovered in the state in which they stand.
Darrell K. Royal monument:
Lubbock monument
Barbara Jordan monument:
Joanna Troutman monument:
Stephen F. Austin monument:
The cemetery’s site has a piece about maintenance on this monument here. 
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Once when driving to Denver, Av and I went through the area of Texas that I had lived. Because we wanted some memento, Av chased down a huge tumbleweed and we brought it all the way home (it hangs in our stairwell). I really should put some fairy lights in it to make it a proper chandelier.
ScoutMob charges $3000 for someone to wire a tumbleweed with Edison bulbs.