La Concha Visitors’ Center at the Neon Museum. Built originally as the lobby of the La Concha Motel in 1961, this concrete shell structure, designed by African American architect Paul Revere Williams, represented the Las Vegas Strip for more than 40 years. Its Atomic Age feel echoes the city’s proximity to the nuclear testing sites of the 1950s. It finally closed in 2004, long after mega-resorts dwarfed the motel, but the community rallied to preserve its shell, which is now the lobby of the Neon Museum. Photo by Jeff Green