A helipad is a landing area or platform for helicopters and powered lift aircraft.

While helicopters and powered lift aircraft are able to operate on a variety of relatively flat surfaces, a fabricated helipad provides a clearly marked hard surface away from obstacles where such aircraft can land safely.

Larger helipads, intended for use by helicopters and other vertical take-off and landing aircraft, may be called vertiports. An example is Vertiport Chicago, which opened in 2015. (source)