Basil (Ocimum basilicum) is an annual plant and grows to a height of 20 to 80 cm. There are many varieties. Most common are the the small-leaved and broad-leaved basil varieties.
In early spring (March-April), sow a few seeds of basil in a pot or window box and simply cover them with some soil.
Basil wants light but not direct sunlight. It needs cool soil, so especially in summer you should water it every day. You should trim the tops regularly to help it grow more.
Greek name: Βασιλικός.
For guides on growing more herbs in pots or window boxes in the city, you may also check: How to grow 16 herbs and other aromatic plants in pots and window boxes.