Central Square is known for its wide variety of ethnic restaurants, churches, bars, and live music and theatre venues. It is gentrifying rapidly, and a number of upscale restaurants have opened in the Square. Many startups, including pharmaceutical, videogame and Internet companies, have moved research and office operations into the Square to take advantage of the proximity to MIT, Boston medical resources and relatively low costs. Some critics have claimed that the recent changes have diminished the Square's edge, as some of the older Square businesses such as Manray have closed. There is also a diverse array of houses of worship in the area, with Christ the King Presbyterian Church, First Baptist Church, Sts. Constantine & Helen Greek Orthodox Church, and other large historic congregations meeting near the Square.