it has been standing up for 87 years
phidias, Callicrates and Ictinus
the great wall has been standing for over 2500 years
a golden statue of Athena but it got stolen.
Wrexham swimming baths has been standing since May 1970
A thousand years
The Parthnon
The phrase (not sentence) 'long-standing army' is grammatically correct. It means 'an army that has been established for a long time.'
for 358 yrs
2 minutes
billion mounths
Since about 550 AD.