Filling empty spaces with thousands of words

German photographer Candida Hofer puts all kinds of public spaces - libraries, museums and waiting rooms, among others - under her lens.

Her photos specialize in showing how these spaces look when they are empty. Hofer's first solo exhibition in Beijing was unveiled on Saturday.

The show, On Methods, presents 72 photos spanning 41 years of her career, including both large-sized images of empty spaces in theaters and museums, and smaller ones on specific spots such as a window or a floor piled with packages.