This man cave from Jonathan Bane and @mancavemasters started as an empty 14- by 20-ft. shed. He installed old school arcade games, a TV and cozy couches to create a nostalgic backyard getaway.

"The new-age man cave is a space that is always adapting ... and practicality. Whether it's a cozy reading nook, an entertainment hub, or a stylish lounge, this modern sanctuary is designed ...