Micklemore Lakes and Lodges

The Deep is a public aquarium in Hull, overlooking the Humber Estuary where the River Hull meets it. Its Endless Ocean tank holds sharks, rays and northern Europe's only pair of green sawfish, and you can walk through Europe's deepest viewing tunnel or ride a glass lift through the water.

Tip: Check the daily talk times when you arrive and plan your visit around the shark and penguin talks. Use HU1 4DP or HU9 1TU for sat nav, which takes you to Tower Street.

Fantasy Island is a resort theme park at Ingoldmells on the Lincolnshire coast, close to Skegness and a short walk from the beach. Rides are split into three wristband levels, Discovery and Adventurer for thrill seekers and Little Explorer for younger children, with height restrictions applying. Outdoor rides sit alongside an indoor entertainment complex in a steel pyramid.

Tip: Check the park is open before you go, as it closes between seasons. Wristbands can be pre-booked online or bought on arrival, and the right one depends on your height.

Lincoln Cathedral is a Church of England cathedral and a working place of worship, consecrated in the 11th century. The building is grade I listed and has Gothic architecture from several periods, including two large rose windows, the Dean's Eye and the Bishop's Eye. The Victorian writer John Ruskin rated it highly among British buildings.

Tip: The cathedral is a living church, so some areas can close for services or events. Check the visit page for current restrictions before you travel.

Bolingbroke Castle is a ruined castle in Old Bolingbroke, Lincolnshire. It was founded in 1220 by Ranulf, Earl of Chester, shortly after he returned from the Fifth Crusade. It is one of the earliest castles designed and built without a keep, relying instead on thick walls, five D-shaped towers and a twin-towered gatehouse.

Tip: Look for the lower walls and the ground floors of the towers, which are the main surviving parts to see.

Lincoln Castle was built by William the Conqueror in the late 11th century on the site of a Roman fortress. It is unusual for having two mottes, and it stayed in use as a prison and court for centuries. It sits in the heart of Lincoln's historic Cathedral Quarter.

Tip: Call the Customer Service Centre on 01522 782019 before you go to check which parts are open and which Magna Carta documents are on display.

Tattershall Castle is a National Trust property built in the 15th century by Ralph Cromwell, Treasurer of England. The Great Tower is an imposing red-brick keep with seven storeys, including the Parlour, Great Hall, Audience Chamber and Private Chamber. Some of the huge medieval fireplaces were once ripped out for sale abroad before being tracked down and returned.

Tip: The tower has 149 steps and no lift, and the grounds have deep gravel, so wear sensible shoes. Dogs on leads can go in most places but not inside the Great Tower, except assistance dogs.

Beverley Minster is the parish church of Saint John and Saint Martin in Beverley, East Riding of Yorkshire. It is one of the largest parish churches in the UK, bigger than a third of English cathedrals, and is regarded as a Gothic masterpiece.

Tip: Tours, including the Roof Tour, can be booked through the Minster's website. On Sunday mornings access is limited to the west end until services finish.

Gainsborough Old Hall is a five-hundred-year-old manor house, built by Sir Thomas Burgh in 1460 and now run by English Heritage. It is one of the best-preserved medieval manor houses in England, and a timber-framed building with a striking black-and-white look.

Tip: Head for the medieval kitchen and great hall first, then finish with the tower climb (59 steps) for the view.