'Due to funding uncertainty, public tours of the Nevada National Security Site have been canceled through 2026,' reads its website.
'Going forward, public tours will be evaluated dependent on the budget situation at that time.'
The tours, which could accommodate up to 50 guests at a time, covered 250 miles after departing from the Atomic Museum. At it's peak, the tours attracted over 10,000 visitors a year.
Patrons were shown sites such as Mercury, a base camp 65 miles northwest of Las Vegas that served as living quarters for civilian and military test personnel.
The mini town featured its own Olympic-size swimming pool and a popular bowling alley frequented by residents.
Mercury was considered the gateway to NNSS and was bustling with life for over 40 years, from 1951 to 1992.
