Die erste Haustür die ganz gut aussieht

Puertas de Madera Sólida - A Pedido / Ignisterra (ok, this is a serious favorite )

Google Image Result for http://www.viewpictures.co.uk/ImageThumbs/ASTA-0006-0015/3/ASTA-0006-0015_Contemporary_Solid_Front_Door_Dusk_shot_of_entrance_to_a_modern_house_Urban_Front__London_UK_2012.jpg

Contemporary Solid Front Door Dusk shot of entrance to a modern house Urban Front London UK 2012

Not sure if this is Zinc or Aluminium. Both could give this finish (just depends on your budget). Design by Vincent Van Duysen.

oversized door with metal fin details that continue on the wall surrounding the door - Vincent Van Duysen

Contraste piso con la puerta

Love the door. horizontal slats stained black for the interior office doors. Recess entry door like this with light on the side.

Dark metal with pivot door

black steel pivot door in Haus M by Titus Bernhard Architects.not too sure but what this is but if I was loaded I would def have a steel door.