Portland’s oldest continuously operating house of worship (continuous since at least 1674, believe it or not) is right here in the heart of the city, although the present-day structure was “only” built in 1825 to replace a previous wooden church building. Constructed of Maine granite quarried near Brunswick, Maine, it’s a narrow, graceful counterpoint to the modern high-rises encircling it. The rough granite blocks and clock tower are topped by a surprisingly graceful spire.