The new elements of the tower are the rusty steel spiral stair section and the information center at its base. The original stone path snakes toward the tower as it climbs, accented with basic steel supports that accentuate the original pathway. The spiral stair section features open windows that provide a preview of the panorama guests will enjoy from its peak. The modern addition is contrasted from the original tower by color, but its uniformity reflects the simplicity of the tower’s design. Adding something so contemporary to something so historic can be quite a challenge, but Castillo-Miras have succeeded in honoring the original and the new spirit of Spanish design. [via designboom, photos by Fernando Alda]