Grad school in completely different field

<p>Hi am a junior majoring in econ and international relations but I want to go to grad school for architecture. However, there is not much I know about which schools have good grad programs in Architecture and what kind of applicants they look for. I still have 3 semesters to go, so any advice for any ECAs/experience or anything that I should do/have to seem like a strong candidate say, for the top 25 schools?
Thanks!</p>