Dalmarnock station is just outside Glasgow city centre, near a major football stadium, and the 2014 Commonwealth Games happened nearby. It has a frequent service, but it's a horrible station. The station is in a trench, with half the platforms in the open air, and the other half in a dingy badly-lit tunnel.
If we're going international, there's also Chambers Street on the New York Subway. It's right in the heart of the city - next to the City Hall, and a 5 minute walk away from the World Trade Centre and Wall Street. In its heyday, it had 3 island platforms and two side platforms. Only two island platforms are still in use, and one of the side platforms is boarded up. The rest sits abandoned.