National Park Service rangers will be on site at all times to assist visitors. Since the statue is not air conditioned, interior temperatures can be 20 degrees higher than the outside. On hot days visitors should drink water at least 30 minutes prior to the climb. There are no rest rooms inside the statue itself. The climb is strenuous and not without risk, and the National Park Service recommends that crown visitors have no significant physical or mental conditions that would impair their ability to complete it, including, but not limited to: heart and respiratory conditions, mobility impairments, claustrophobia (fear of confined spaces), acrophobia (fear of heights) or vertigo (dizziness).