Metal beams and heavy steel piles as par..
Structure of steel roof...
Indoor fire escape stairs in hotel..
spiral staircase..
Lookout tower or observation tower in Ho..
flight of stairs..
Architectural details of modern apartmen..
stairs emergency and evacuation exit sta..
Escaleras interiores en un edificio publ..
High building seen from below..
The stairs lead to the second and third ..
escaleras hacia abajo..
Stairs in Seville..
Toit en verrière. ..
Stair of outdoor Emergency Exit in workp..
stairs emergency and evacuation exit sta..
Metal stairs of an office building with ..
Detail einer Glasfassade..
Grunge electric wire or cable on galvani..
staircase up. business skyscraper with p..
Indoor large concrete column structure..
Staircase in a modern building..
Modern metallic structure inside a wareh..
Winding stairs in luxury apartment..
Windows and blue sky. Abstract fragment ..
Staircase inside the building, lamp ligh..
Glass staircase leading to the second fl..
Combination of metal and glass wall mate..
Crossing structure of concrete pillars a..
Ekurhuleni Photo Library..
office building..
ビルの窓から見下した光景(l..
Modern architecture. Building roof. Glas..