Built in 1828, the Greek Revival building historically served as both a church and marketplace.

[1] The former Mariner's Church occupies much of a city block in Portland's Old Port area.

It is a three-story masonry structure, built of granite and brick, with a broad gabled roof.

The main facade has six storefronts on the ground floor, each with a recessed entrance flanked on one side by a large fixed-pane display window.

Old Port Tavern, on the Moulton Street side of the building, closed in 2022, after fifty years of operation.