The grounds of Fermi National Accelerator Laboratory in Batavia are open to the public again after being closed for two years due to the COVID-19 pandemic.

Access to indoor areas remains limited and there are new visiting hours and access requirements, officials said Monday.

Visitors may enter through the gate on Batavia Road on the east side of the facility, and the Pine Street entrance off Kirk Road on the west.

The grounds will be open from dawn to dusk.

The Lederman Science Center will be open from 8 a.m. to 5 p.m. weekdays and 9 a.m. to 3 p.m. Saturday.

Wilson Hall remains closed to the public. Tours are available; check the schedule at ed.fnal.gov.

The public may visit the laboratory’s bison herd, use its interpretive trails, and walk, bicycle, run, skate, ski, snowshoe, watch birds, take photographs and paint.

They cannot use drones, fish, ice skate or bring dogs on to the site.

All visitors 18 or older, including those on foot or bicycle, must show a government-issued photo ID to enter the site. Visitors will receive a red sticker, which must be visible at all times when on the site.

Beginning May 3, 2023, people will be required to show a REAL ID-compliant identification or passport to enter.

Face masks are required in some areas. If community levels of COVID-19 rise to a medium or high rating, visitors will have to show proof of vaccination or a negative COVID-19 test to enter indoor areas.

For more information, visit fnal.gov.