The Ecstasy of Saint Teresa is generally considered to be one of the sculptural masterpieces of the High Roman Baroque. It depicts Teresa of Ávila.

The group is illuminated by natural light which filters through a hidden window in the dome of the surrounding aedicule, and underscored by gilded stucco rays. Teresa is shown lying on a cloud indicating that this is intended to be a divine apparition we are witnessing. Other witnesses appear on the side walls; life-size high-relief donor portraits of male members of the Cornaro family, e.g. Cardinal Federico Cornaro and Doge Giovanni I Cornaro, are present and shown discussing the event in boxes as if at the theatre. Although the figures are executed in white marble, the aedicule, wall panels and theatre boxes are made from coloured marbles. Above, the vault of the Chapel is frescoed with an illusionistic cherub-filled sky with the descending light of the Holy Ghost allegorized as a dove.

The art historian Rudolf Wittkower wrote:

In spite of the pictorial character of the design as a whole, Bernini differentiated between various degrees of reality, the members of the Cornaro Chapel seem to be alive like ourselves. They belong to our space and our world. The supernatural event of Teresa's vision is raised to a sphere of its own, removed from that of the beholder mainly by virtue of the isolating canopy and the heavenly light.

According to wikipedia