ソバートンの洞窟・トップ6

Good cafe. The outside seating has views across Portsmouth Harbour and the Solent to the Isle of Wight.

Some of the ruins are fenced off but still able to walk around most of it

This atmospheric moated Bishop's Palace is a scheduled ancient monument and a Grade II* listed building, with some parts dating back to the 12th century. Free entry, open weekends only.

Free entry, but parking is £3 if you use the official one. Free if you park across the road. Very informative and well laid out museum.

Atop the escarpment of Portsdown Hill above Portsmouth lie five forts. Built during the Victorian era, these forts provided vital defence for the military harbour below. Fort Nelson is a six-sided Palmerston Fort, squat with red brick walls. After falling out of use, the fort was eventually sold to the local council to be renovated and reopened as a museum. Today, the fort houses a fascinating array of cannons and other weapons, with live firing demonstrations and guided tours. You can also explore the tunnels within but don't forget a jumper because they can get rather chilly, so thick are the walls.

Once the site of Portus Adurni, a Roman fort, the Porchester Castle you see today dates back to the 11th century. This vast defensive site occupies a prominent position within Portsmouth Harbour and has fantastic views southwards. The castle has seen many occupiers over the years including, briefly, the French. You can climb to the top of the keep to get the best views of the busy harbour. These days, the castle is under the management of English Heritage and open throughout the year for visitors. To save money on ticket price, book online in advance.

Once a grand residence, this Grade II-listed palace is well worth exploring. Lying in the heart of the Hampshire town of Bishop's Waltham, the palace was first constructed in the 12th century, with many additions added in later centuries. In the 14th century, the palace was taken over by William of Wykeham, the Bishop of Winchester and Chancellor of England. He had the tower built, the great hall rebuilt and other extensions constructed. In the 17th century, the palace was severely damaged in the Civil War, with much of its materials scavenged for other construction work. Today, the site is managed by English Heritage and is free to explore.

Free entry to the castle grounds and a very historical location.