What is Rainier Square Tower?
{{Infobox building | name = Rainier Square Tower | logo = | logo_size = | logo_alt = | logo_caption = | image = Rainier Square Tower, May 2020 from 4th Avenue and Union Street.jpg | image_size = | image_alt = | image_caption = Under construction in May 2020 | former_names = | alternate_names = | status = Completed | building_type = [[mixed-use development|Mixed-use]] | architectural_style = | classification = | location = | address = 1301 5th Ave<br>[[Seattle, Washington]], U.S. | coordinates = {{Coord|47|36|33.12|N|122|20|05.89|W|region:US-WA_type:site_scale:4000|display=inline,title|name=Rainier Square Tower}} | map_type = Seattle WA Downtown#Washington#USA | map_caption = Location in Seattle##Location in [[Washington (state)|Washington]]##Location in United States | altitude = | current_tenants = | namesake = | groundbreaking_date = | start_date = October 2017 | topped_out_date = August 2019 | completion_date = 2021 | opened_date = | inauguration_date = | relocated_date = | renovation_date = | cost = $600 million (estimated) | client = | owner = | landlord = | affiliation = | height = {{convert|850|ft|m}} | architectural = | tip = | antenna_spire = | roof = | top_floor = | structural_system = | material = | size = | floor_count = 58 | floor_area = <!--- {{convert|725,000|sqft|sqm}} --> | elevator_count = | grounds_area = | architecture_firm = [[NBBJ]] | developer = Wright Runstad | engineer = | structural_engineer = | services_engineer = | civil_engineer = | other_designers = | quantity_surveyor = | main_contractor = Lease Crutcher Lewis <ref>{{cite web |last1=HILBURG |first1=JONATHAN |title=Seattle's second tallest tower rises on steel plates, without rebar |url=https:/