Doroquez, Berciu et al. provide a remarkable view of elaborate sensory neurons, such as the complex branched ciliated-endings of the so-called ‘amphid wing’ neurons (yellow) that are required for detecting chemicals in the environment. These tree-like branches contain molecular filaments (called microtubules) that are arranged in a variety of different ways that had not previously been recognized. It is thought that these branches increase the surface area of the cilium, allowing the animal to better sample its chemical environment. The base of the cilium is called the transition zone (purple).