Shelter constructed from interconnecting panels

A shelter comprising:

• a floor portion,
• at least one wall portion comprising a top wall portion, a bottom wall portion, or both, and
• a roof portion;
• wherein each portion comprises at least two panels detachably interconnected using female and male bracket elements configured for receiving the panels and comprising cooperating means actuated by longitudinal movement for preventing separation of the female and male bracket elements and interconnecting the panels;
• wherein each panel comprises a first planar layer and a second planar layer and the first planar layer is offset from the second planar layer;
• and
• wherein the female or male bracket element is disposed on the first planar layer.