Capital gains on sale of rental property for someone over age 65

I own a rental property in Marietta Ga. that I am thinking of selling and have a couple of questions. I am over 80 years old & married.

1. Is there any way of avoiding paying capital gain on he sale? Would putting the proceeds in a trust work? How about  using the gains to invest in an REIT?

 

2 What would the tax rate be on the sale for someone over 65 making adjusted gross would be less than $500,000

 

Thanks

Frank