Wormhole Library, which opened Monday in Haikou, South China’s Hainan province, is made of white concrete and features an open balcony and a pond. Photo: VCG

Visitors roam outside the curved building on Saturday. Photo: VCG

Visitors sit beside the library’s pond. The exterior walkways provide passers-by with places to rest. Photo: VCG

The reading space, which can hold nearly 10,000 books, includes a terrace and a cafe. Photo: VCG

Holes of different sizes bring natural light into building. Photo: VCG

Visitors check out the sunset Sunday in front of a window in the library. Photo: VCG

Visitors look at the library’s lit exterior at night during a lighting test on April 3. Photo: VCG