Detail of cobwebs on a wooden wall

Shapes formed by Staircase, brick wall and ceiling

Detail of a tree in front of a wall

Architectural detail of blue wall

Detail of staples, thumbtacks and ripped paper on a wooden wall

Staircase reflected on glass wall with blurred light switch in foreground

Great Wall of China

Detail of an exit sign

NIGHTSHIFT sign on a wall

Detail of high-rise apartment buildings

Staircase

Detail of high-rise apartment buildings

Staircase, artwork

distressed wall detail

Architecture - England - line art Detail Victorian Wooden staircase, c. 1885

Architecture - England - line art Detail Victorian Wooden staircase, c. 1875 (bannister)

A blastocyst begins implanting in the wall of the uterus.

Architecture - Italy - line art Detail Gothic/Renaissance Wall decoration in Santa Croce - the church of the Franciscan order at Florence and the finest example of Italian Gothic architectural style (begun in 1294 and finished in 1442). The Renaissance -

Anatomy of the structure and layers of the stomach wall.

Architecture - Austria - line art Detail Romanesque Corbel Table from Ratzburg. A corbel is a bracket or beam that is laid deeply into the wall to provide support and usually projects beyond the wall. A row of corbels is known as a corbel table. This m

Architecture - Hungary - line art Detail Romanesque Capitals (The head of a pilaster or column) Church at St. Jak, Hungary. A pilaster is a rectangular, decorative column that projects beyond the surface of the wall. Generally it serves no structural

Anatomy of the structure and layers of the stomach wall.

Architecture - Greece - line art Detail Capital of pilaster on the Monument of Philopappus, Athens. A pilaster is a rectangular, decorative column that projects beyond the surface of the wall. Generally it serves no structural purpose and serves mainl

Architecture - Italy - line art Detail Renaissance Capital of Pilaster. Marble. Santa Maddalena de` Pazzi at Florence. By Giuliano da San Gallo (1445-1516). A Pilaster is a rectangular, decorative column that projects beyond the surface of the wall. Gen

Detail of a wall and staircase