Art adviser Will Kopelman (aka Drew Barrymore [1]'s husband) might have the most exquisite man cave we've ever seen. Located just off of Will and Drew's bedroom — through a tufted door made from men's suiting fabric, naturally — Will's private haven includes an office, bathroom, and dressing room. In other words, it's a modern dandy's dream come true.

Even longtime friend Gwyneth Paltrow [2] has gushed about Will's eye. "Will is not a snob, but he knows quality," says Gwyneth. "I've been on a mission to get him to start his own design firm." We couldn't pass up an opportunity to take a closer look at this beautifully designed space featured in Architectural Digest [3]. Well done, Will!

Flooded with natural light and glossy white paint, the room is filled with Will's most prized possessions — books, art, and family photos — all tastefully curated with Will's sharp design aesthetic (think Downton Abbey with a modern twist).

Will's walk-in closet/dressing room features black-lacquer cabinetry and brass hardware.

A retreat in itself, the veined-brown marble bathroom is masculine yet airy, thanks to the faux skylight.