Alicia Keys and hubby Swizz Beatz are such big art nuts, they have to sell their massive estate for some bigger digs so they can display it all.
Real estate sources tell us ... the 25,000 sq. ft. home wasn't big enough for their enormous art collection that features pieces by Jean-Michel Basquiat, Andy Warhol, Ernie Barnes, Keith Haring and many other artists.
The Englewood, NJ home is filled with such a massive collection, Swizz calls it "Eight Acres of Showtime."
The couple bought the house back in 2013 from Eddie Murphy. It's pretty awesome ... the sprawling home boasts 8 bedrooms, a movie theater, indoor pool, 2 lane bowling alley, recording studio and, of course, a gym. Listing price: $14.9 million.
As for their next move ... they've figured out a way to get enough wall space ... Alicia and Swizz are building from the ground up.