This is a 21 story condo building in midtown OKC, at NW 23rd and Classen. It was formerly called Citizens Tower and housed businesses. It was then purchased, revamped, given posh hotel-style amenities, and renamed The Classen. At first, they were just for sale, but now they're allowing rentals. (Maybe because while $200,000ish is cheap for some places, in Oklahoma City, that will buy a nice house? Or maybe because the other condo / apt places downtown are mostly purchase, so there's a rental market? Dunno.) Apartment.com shows their rates at $1250 to $2000 / month and describes it as:
"The wait is over, Oklahoma City's most exclusive luxury high rise apartments are now available for lease. Originally constructed in the style of Frank Lloyd Wright in 1966, The Classen is a 20 story hexagon marvel, clad in glass and marble. Its towering presence is a premier architectural icon that shines again in the Oklahoma sky. The Classen has floor to ceiling windows, with breathtaking panaramic views of the downtown skyline, the State Capitol, treescapes dotted with houses and steeples, and legendary Oklahoma sunsets. Let us lavish you in style with panoramic views, stainless steel appliances, hardwood floors, granite counter tops and amenities that rival a five star hotel."
(Photo is from a couple of weeks ago. Today, Oklahoma City is having a break from all the intense sunshine - rain, yay!)