Portobello House (also known formerly as Portobello Hotel) is a building on the bank of the River Ogmore, about half a mile up from the sea, near the estuary at Ogmore-by-Sea, western Vale of Glamorgan, southeast Wales, on the country border with Bridgend County Borough. It is accessed off the . It was used to describe the location of several geological features in 1933. It was formerly the Portobello Hotel, run by the Prosser family and was used as a social club at the weekends for shooters on Sundays after practicing at the Glamorgan Artillery, nearby. In its heyday, the owner would also take guests out onto the river on a boat from the house. Merthyr Mawr Sand Dunes lie across the river from the house and Southerndown Golf Club lies to the southeast.
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