I recently came across this project (Bodhivastu) which aims to build a stupa (similar in size and design to the Boudhanath Stupa) in the United States. Seems like quite an auspicious project to partake in and having not seen any mention of it on this forum I decided to post about it.
Their website is here: http://www.bodhivastu.org/
Here's a rendering of what they're planning for it to look like
hopefully they are successful with this!
and may all beings benefit