Fancy living inside a Victorian railway cathedral? A penthouse flat at St Pancras in central London has hit the market, and it's about as unusual as city real estate gets. The listing, spotted by Secret London, offers a home directly above the famous station — the Gothic Revival landmark that serves Eurostar trains to Paris and Brussels.

The building in question is the St Pancras Chambers, the former Midland Grand Hotel designed by George Gilbert Scott in the 1860s. The flamboyant red-brick frontage was converted years ago into a mix of apartments and a Marriott hotel, and flats here rarely come up for sale — which is why each listing tends to generate buzz. Residents effectively live inside one of London's most photographed facades, steps from King's Cross, the regenerated Granary Square area and the regents canal towpath.

What makes these apartments a talking point is the setting as much as the interiors. The upper floors sit under the great pitched rooflines of the station, with windows that look out over the Barlow Shed's glass-and-iron span and the trains sliding beneath. Heritage conversion rules mean the building's ornate stonework, pointed arches and grand staircases are protected, so buyers get period character you simply cannot build new. The trade-off, as with any listed landmark home, is that layouts are dictated by the original architecture rather than modern floor plans.

For travellers, it's a nice reminder of how much is packed into the St Pancras and King's Cross area. Even if the seven-figure asking price is out of reach, the surrounding neighbourhood is one of London's most rewarding to explore: the restored booking hall and its champagne bar sit under Europe's largest single-span station roof, the British Library is next door, and Granary Square's fountains and restaurants are a five-minute walk. It's a good case for treating stations as destinations in their own right.

If a railway-station penthouse is a bit of a fantasy, the practical takeaway is simpler: St Pancras makes a smart base for a London trip, especially if you're arriving from or heading to continental Europe by train. Hotels in the Chambers building itself and around King's Cross put you one Underground hop from the West End and direct trains from the airport via King's Cross St Pancras station.