Home | H2 Property Holdings H2 Property Holdings LLCThe Hogrefe Building 152 Columbus Ave Sandusky Ohio 44870 Home Sandusky Properties Bay View Properties 2019 Business Grant Initiative About H2 Property Management H2 in the News Latest Updates on Projects Rental Application Process Current Vacancies Tenant Information Local Resourses Volunteerism The Hogrefe Foundation More Restoring and Preserving Sandusky and Bay View The Sandusky Children39s Museum It is with much sadness that we had to make the decision to close the museum. With the difficulty in lack of sufficient staffing the hardest decision to close these doors we know how disappointing this news is. We tried since 2018 to make this a home for children and teens to come and exercise their curiosity and imaginations. We thank all who visited the museum.