Photo: 4.20 Party Hashtag: #ClarkMuseum50 History On April 20, 1968, the very first public museum in the Vegas Valley opened in a condemned gymnasium in downtown Henderson. Fifty years later, the Clark County Museum has moved, changed names and become a pre-eminent location for learning the history of Southern Nevada. Coinciding with the anniversary, the … Continue reading 50th Anniversary Year for Clark County Museum (2018)