Open Door: Inside Celebrity Homes

Celebrity designers Nate Berkus and Jeremiah Brent (stars of TLC's Nate & Jeremiah By Design) give Architectural Digest a full-access house tour around their spectacular 1928 Spanish Colonial home in the Hancock Park neighborhood of Los Angeles, California.

Superstar singer Ricky Martin and his partner Jwan Yosef take Architectural Digest inside their LA home. The couple shows AD their kitchen, family room, Martin's Grammy collection, the sound-proof screening room, the massive hallway, interior patio, master bedroom, gigantic bedroom, zen-inspiring fire pit, recording studio and art studio.

Terry Crews welcomes Architectural Digest into his "office", his "fortress of solitude", his man cave, his home away from home in LA.

Robert Downey Jr. (Iron Man, Avengers) and wife Susan Downey turned a converted windmill into a stylish and charming Hamptons home. In this funny, full-access house tour, the Downeys show off their favorite art, let you into their closets and explain why their cats have full run of the place.

Grammy-winning record producer and DJ Zedd gives an in-depth tour of his $16 million mansion in Benedict Canyon, an area of Los Angeles that's near Sherman Oaks and northwest of Beverly Hills. Zedd's self-decorated home is 9,500 square feet with views of the canyon and tons of full-length glass windows.