The Warren United Methodist Church might qualify for Rundbogenstil were it not for the very slight pointing of the arches, which takes away the Rund part of Rundbogenstil. With its battlemented roofline, it gives the impression of a chapel built into a castle. The attached parsonage is more interesting and more striking than the church when we see it from the street, and our only legitimate complaint about it would be that it draws too much attention toward itself and away from the church.
Addendum: The architects of the church, and probably the parsonage as well, were Milligan & Miller of Wilkinsburg; it was built in about 1908. Source: Ohio Architect and Builder, July, 1907. “PITTSBURG.—Architects Milligan & Miller, of Wilkinsburg, are drawing plans for a brick and stone church to be erected on Center avenue, for the Warren Methodist Episcopal congregation. Cost $3,000.” A zero has probably been left out of the cost; you could not get a brick and stone church for $3,000, but this could easily be a $30,000 church.