Science museums provide learning opportunities through exhibits using various kinds of media,but they also require providing a space and time environment that differs from that in daily life.Immersive displays have been used to exhibit virtual reality content in such learning facilities,and they can provide users with a sense of presence by incorporating a wide field of view.We created an immersive projection display for visualizing the Yatsu tideland,an area registered under the Ramsar Convention on Wetlands.We conducted an empirical study to compare different fields of view when a user moves around in the virtual world.The results of the subjective evaluation suggested that a field of view of 90 degrees would sufficiently provide a sense of presence in a non-stereoscopic view.