Every second Sunday of the month, the ECHO Leahy Center for Lake Champlain opens its doors early for visitors of all ages who have sensory processing differences. Kids and adults with autism spectrum disorder, developmental disabilities, or any other condition that makes loud noises and crowded spaces difficult are welcome to enjoy a sensory-friendly museum. The rooms are quiet, the lights are turned down, and each guest has access to a backpack full of helpful devices such as noise-canceling headphones, allowing everyone to meet the live animals and interact with the exhibits in a calm environment.