Gifting real estate to non us resident spouse

I am a resident of US and my wife is a resident of Canada (non resident of US). I would like to gift my spouse part of my  house located in US,  using yearly gift tax  exclusion, being $190,000 for 2025. I intend to repeat this every year going forward. 

What are the tax consequences of doing this, especially in respect to gift tax,  capital gains tax for my spouse if she ever decides to sell, the estate tax etc.