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Abstract: Hyper-Kamiokande is the next generation underground water Cherenkov detector at Kamioka, Japan. It combines a diverse science program including nucleon decays that are predicted by a grand unified theory, long-baseline neutrino oscillations to discover leptonic CP violation, atmospheric neutrinos for the precise research on neutrino oscillations, and neutrinos from astrophysical origins. The detector uses a 260 kiloton ultra pure water with an 8.4 times larger effective mass than its predecessor, Super-Kamiokande. A 50 cm diameter photomultiplier tube was developed for the Hyper-Kamiokande detector, doubling its performance. The construction has started in early 2020 and the experiment is expected to start operations in 2027. This talk will describe the overall Hyper-Kamiokande project with the physics sensitivities and the recent status of the detector development and construction.