construction of a concrete wall from concrete blocks filled inside with reinforcing steel and concrete. gray stepped wall of hollo

architecture background black blocks bricks bush bushes city closeup colorful concrete construction dark day europe evergreen fence filled flower foundation garden glossy grass gray green hollo hollow house inside labyrinth landscape lawn metal natural nature opaque outdoor park path plant pragense prague rectangle reinforcing row season shrub sidewalk sky spring steel stepped street summer tall town travel tree trimmer urban viburnum view wall white