The listing calls this apartment a “gateway to a modern version of Narnia”–and it’s hard not to agree. A designer has decked it out with bold colors, quirky additions like a built-in swing and a sculptural wall paneling made of walnut, even a hidden door that leads to a bedroom. It’s like something out of a fantasy novel, if that novel took place in Park Slope, Brooklyn. The apartment comes from the Park Pavilion Condominiums development, at 372 15th Street. For 1,451 square feet of surprising, offbeat interiors, it’ll cost just under $2 million.