The large lock of the Ballard Locks will be emptied in mid-November, and the U.S. Army Corps of Engineers are offering VIP tours to the public for adults. The tours will be Nov. 13, 16, and 17 from 10 am to noon.

“This is a unique opportunity to learn how the Locks really work, how they serve Seattle and what it takes to keep them functioning after 100 years of operation,” according to the event information. They say the tours are limited to groups of 20 people and sell out fast.

“It is very interesting to see just how large the lock chamber is, how it works, and the amount of sea life (including lots of barnacles) that accumulates during the year,” the event information reads. For more information, click here.