An architect is a person who plans, designs, and reviews the construction of buildings. To practice architecture means to provide services in connection with the design of buildings and the space within the site surrounding the buildings, which have as their principal purpose human occupancy or use. Professionally, an architect's decisions affect public safety, and thus an architect must undergo specialized training consisting of advanced education and a practicum (or internship) for practical experience to earn a licence to practice architecture. Practical, technical, and academic requirements for becoming an architect vary by jurisdiction.