The Cubix Dog Mansion by German company Best Friend's was designed to pay homage to the Bauhaus style. The raised roof and rectangular windows are nice architectural details, that will make any modern furniture lover's pet feel right at home.
Mexican Hacienda Dog House [link] This hand-crafted dog house belongs to the actress/model Rachel Hunter and is designed by La Petit Maison. The second photo is of the interior of the dog house with terra-cotta floors and all, large enough to fit a human.
I wish my house was big enough for a SESAME STREET DOG HOUSE! City dwellers, Buster and Bruno show off their urban-style home. The two-story house boasts an electric street light and an interior chandelier.