Systems, methods, and apparatus include a modular tent comprising an upper tent portion having a first base surface area, wherein the upper tent portion does not include a floor surface; and a base extension that includes a floor surface having a second base surface area, the second base surface area being larger than the first base surface area, wherein the base extension is removably secured to the upper tent portion, wherein the base extension, when secured to the upper tent portion, results in a base surface area of the modular tent increasing to the second base surface area.