If you are building a new home, slide out dog/kid doors...this is the greatest idea EVER...no more awful looking baby gates!
Hidden pantry. Yeah that's just cool!
This would be every doorway in my house if I had my druthers.
Built-ins at the stair landing in 4 Bed House Plan 24362TW ~2,800 sq. ft. with walkout basement Architectural Designs, #readywhenyouare
Surprise! This secret bookcase door opens to reveal a hidden staircase.
Transitional Closet by Cullum Homes and Renovations
28 gorgeous and creative home decor ideas: Making your own movie theater. #20 is the best.
Brownstones in Manhattan.
Basement window that looks out into the pool