There are plenty of places to pause the tour and look around. Before you start (or at the end), swing by Wilson Hall to check out the soaring atrium and exhibits, second floor art gallery, and fifteenth floor viewing areas. If you're hungry, pay a visit to the cafeteria. There are also free tours of different experiments throughout the month that you can sign up for. Depending on when you visit, there are also lectures and art performances. More details here: https://www.fnal.gov/pub/visiting/tours/index.html
Elsewhere on the tour, you may wish to stop and visit our most popular attraction, the bison; go birdwatching at Lake Law; get up close to the bubble chamber; hike the Margaret Pearson Interpretive Trail; or check out the store and interactive exhibits at the Lederman Science Center (fun for kids). Fermilab is also a great place for fishing and bike riding, and has an off-leash dog area. To learn more about Fermilab, visit fnal.gov, or follow @Fermilab on social media.
Fermilab's site is open to visitors from 8 am to 6 pm from November through March and 8 am to 8 pm the rest of the year. If you're planning to visit the Lederman Science Center or Wilson Hall (atrium, art gallery, or 15th floor), check the open hours: https://www.fnal.gov/pub/visiting/hours/.
Keep in mind that Fermilab is a working lab, so many employees will be arriving between 8 and 9, getting lunch around noon, and leaving between 4 and 6. You may experience a small amount of traffic at these times. Fermilab is particularly beautiful around sunrise and sunset. During the day, an ideal time is probably around 10am: roads are clear, buildings are open, and the lab is bustling.
Keep an eye out for wildlife! Greater sandhill cranes, geese, coyotes, and other creatures are often spotted on or near roads. Make sure to follow all road signs (including authorized personnel only signs), respect the cyclists and pedestrians that share our roads, and enjoy the trip! Make sure to drive the speed limit or below, otherwise the tour audio may not function correctly.