high-rise buildings and skyline in a big city with cranes and construction machinery under a beautiful blue sky

skyscraper landmark tower metropolis city downtown skyline architecture building facade condominium neighbourhood spire headquarters high-rise buildings big cranes construction machinery under beautiful blue sky aerial apartment business center cityscape crane district engineering equipment europe evening exterior frame frankfurt geometric germany glass high rise modern night people office place work scene scenic site spot structure summer tall tourism town travel urban view window skline