A good friend of mine put me on to this almost unkillable herb a few years back. It is a member of the same genus as Oregano with a similar but milder taste.
It is an ingredient in ‘Italian Herbs’ and ‘Herbes de Provence’, both popular spice mixes. I use it primarily in pasta sauces and sprinkled over pizzas.
It can grow quite large for a herb but I box it into a tiny little hedge next to some oregano. If you are starting a herb garden from scratch this is a good choice. Both the leaves and the flowers are usable and it splits and transplants easily.