The First Church of Christ, Scientist is considered the Mother Church for the Christian Science church and was completed in 1894 with major additions in 1906; it boasts one of the world's largest pipe organs and has a sanctuary that seats 3000
Church of the Covenant, an 1867 Gothic Revival masterpiece, has one of the largest collections of liturgical windows by Louis Comfort Tiffany in the country; its 236 foot steeple is the tallest in Boston