Milefortlet 20

Allonby is a village on the coast of Cumberland in Cumbria, England. The village is on the B5300 road 5 miles (8.0 km) north of Maryport and 8 miles (13 km) south of Silloth. The village of Mawbray is 3 miles (4.8 km) to the north, and 3.5 miles (5.6 km) to the east is the village of Westnewton, Carlisle is located 26 miles (42 km) to the north-east. Other nearby settlements include Crosscanonby, Edderside, Hayton, and Salta.

Allonby Bay is a crescent-shaped bay of the Solway Firth on the north-western shore of Cumbria, England. The bay is 5.5 miles (8.9 km) across. Its northern point is at Dubmill, between the village of Mawbray and the hamlet of Salta, and its southern end is just to the north of Maryport, near the village of Crosscanonby. The B5300 coast road follows the shoreline of Allonby Bay, running between Silloth in the north and Maryport in the south. As an inlet of the Solway Firth, Allonby Bay is also part of the Irish Sea. The bay is named after the village of Allonby, which sits roughly in the centre of the shoreline.

Milefortlet 21 (Swarthy Hill) was a Milefortlet of the Roman Cumbrian Coast defences. These defences were contemporary with defensive structures on Hadrian's Wall. Its remains exist as reconstructed turf ramparts (to a height of about 1 metre (3.3 ft)) and ditch, reinstated to its original profile (also around 1 metre (3.3 ft)). They are located on a low cliff on the coast, north of the village of Crosscanonby, and just inland from the coastal road. It is the only milefortlet to have been fully excavated and is open to the public.

Crosscanonby (otherwise Cross Canonby) is a village and civil parish in Cumbria, England, historically part of Cumberland, near the Lake District National Park in England. It is situated within the Solway Coast, designated an Area of Outstanding Natural Beauty. The civil parish includes the larger village of Crosby and the hamlets of Birkby and Crosby Villa. The population of the parish was 1,054 in 2001, increasing to 1,113 at the 2011 Census. The parish is served by one public house, the Stag Inn, and a primary school (both in Crosby).

St John the Evangelist's Church is in the village of Crosscanonby, Cumbria, England. It is an active Anglican parish church in the deanery of Solway, the archdeaconry of West Cumberland and the diocese of Carlisle. The church is recorded in the National Heritage List for England as a designated Grade I listed building.

Crosby is a small village in the Allerdale district of the English county of Cumbria, historically within Cumberland, near the Lake District National Park. It is 3 miles (4.8 km) north-east of Maryport + 25.1 miles (40.4 km) south-west of Carlisle, on the A596 road. In 2020 the built-up area had an estimated population of 791. In 1870-72 the township had a population of 506. The local primary school is Crosscanonby St. John's Church of England School. The only remaining public house in the village is The Stag Inn.

Birkby is a hamlet in the Allerdale district of the English county of Cumbria, historically within Cumberland, near the Lake District National Park. It is located on the A596 road, 1.6 miles (2.6 km) north-east of Maryport + 26.2 miles (42.2 km) south-west of Carlisle. In 1870-72 it had a population of 157.

Allerby is a hamlet in the civil parish of Oughterside and Allerby, Allerdale district, Cumbria, England.

Crosby Villa is a hamlet in the civil parish of Crosscanonby in Cumbria, United Kingdom. It is located on the A596 road, 3.75 miles (6.04 km) north-east of Maryport and 3.75 miles (6.04 km) south-west of Aspatria. The village of Crosby is 1.5 miles (2.4 km) to the south-west, and the hamlet of Oughterside is 2.25 miles (3.62 km) to the north-east. Cumbria's county town, Carlisle, is 24 miles (39 km) to the north-east.Crosby Villa lies on the Solway Plain, less than 1 mile (1.6 km) from the boundary of the Solway Coast Area of Outstanding Natural Beauty, and approximately 1.5 miles (2.4 km) s from the shore of Allonby Bay, an inlet of the Solway Firth. Historically, the name may have been spelled Crosby Villas.

Dearham Bridge was a railway station on the Maryport and Carlisle Railway (M&CR) serving the village and rural district of Dearham in Cumberland (now in Cumbria), England. The station was opened by the M&CR in 1842 as Dearham, but was renamed Dearham Bridge in 1867 when the M&CR opened a station in the village of Dearham, to which it gave that name. Dearham Bridge station lay in the Parish of Crosscanonby.

Milefortlet 22 (Brownrigg) was a Milefortlet of the Roman Cumbrian Coast defences. These milefortlets and intervening stone watchtowers extended from the western end of Hadrian's Wall, along the Cumbrian coast and were linked by a wooden palisade. They were contemporary with defensive structures on Hadrian's Wall. There is little to see on the ground, but Milefortlet 22 has been located and excavated.

Bullgill or Bull Gill was a railway station on the Maryport and Carlisle Railway (M&CR) serving Bullgill in Cumbria. The station was opened by the M&CR in 1840 and lay in the Parish of Oughterside and Allerby. It closed in 1960