Gazing out across the Welsh landscape, this late 13th century castle keeps a watchful eye on Snowdonia. Its fascinating history includes a long seige her during the Wars of the Roses. Do you know its name?
Set in peaceful countryside near the Welsh border, this manor house dates back to the 11th century with a great hall that has remained unaltered since 1291. Recognise it?
A Tudor fan's paradise, this double-moated castle was once the childhood home of Anne Boleyn and dates back to 1270. The long gallery features costumed figures of Henry VIII .
In 1588, it was here that the first beacon was lit to warn of the arrival of the Spanish Armada.
For 600 years, this castle did a rather good job of protecting Jersey from French invasion. Today, lifesize wooden soldiers guard the castle from attack to give the visitor a taste of its past life.
Built on a rock in the 13th century, this beautiful castle has been well preserved. Although it is privately owned, there are a number of private tours available each year.
Perched on a rocky crag and only accessible via a three-mile causeway at low tide, this was originally a Tudor fort that was part of the national defence for more than 300 years.
The sheer scale of this castle gives it a rather overwhelming presence and majestic persona. It was designed to echo the walls of Constantinople, and has remained unchanged ever since.
One of the most iconic images of Scotland, this sixth century castle sits on an island at the point where three lochs meet, surrounded by majestic scenery.
This spectacular artifice has wonderful coastal views. Although the building as it stands is relatively recent - much of it dates back to late Victorian times - the castle boasts a long history: it was once home to the kings of ancient Northumbria, and archaeological digs have unearthed some spectacular prehistoric finds.
Recognise these famous rounded turrets? This medieval castle and royal residence in Berkshire was built by William the Conqueror. It's been used as a residence by royals since the time of Henry I. Know what it is?
Think you know your Eilen Donan from your St Michael's Mount? Go on then - let's see how many you can get...