The present structure of Crom Castle was built in 1820 and, although Queen Victoria's reign began in 1837, the building was built in the Victorian style and has since been the home to the Creighton (later Crichton) family, Earls of Erne.
Crom Estate also contains the ruins of the Old Castle, a tower house, which was previously owned by the Balfour family until the Creightons acquired it in 1609.
The castle is privately owned by the Creighton family, Earls of Erne, and the estate is managed by the National Trust.
The estate includes many features of times past including the old farmyard and visitors centre, The boathouse, once the home of Lough Erne Yacht Club, the tea house, the church, schoolhouse, etc. Guests are able to use the west wing for weddings, or to stay in the West Wing of Crom Castle on weekly or long weekend basis.
References:Carlsten is a stone fortress built on the orders of King Carl X of Sweden following the Treaty of Roskilde, 1658 to protect the newly acquired province of Bohuslän from hostile attacks. The site of Marstrand was chosen because of its location and its access to an ice free port. Initially a square stone tower was constructed, but by 1680 it was reconstructed and replaced by a round shaped tower. Successive additions to the fortress were carried out, by the inmates sentenced to hard labour, until 1860 when it was reported finished. The fortress was decommissioned as a permanent defense installation in 1882, but remained in military use until the early 1990s.
The fortress was attacked and sieged twice falling into enemy hands. In 1677 it was conquered by Ulrik Frederick Gyldenløve, the Danish military commander in Norway and in 1719 by the Norwegian Vice-Admiral Tordenskjold. At both occasions the fortress was returned to Swedish control through negotiations and treaties.