Upstairs, the private areas have barrel-vaulted ceilings and include a secluded master suite.

The barrel-vaulted ceilings cause an echo, the better to prevent prisoners from trying to talk to each other.

Inside, the barrel-vaulted ceiling of the lobby was supported by a Tuscan order.

This massive stone building with a 30ft-high barrel-vaulted ceiling still displays more than half of Franklin's original collection.

One wing is two-stories high and capped by a barrel-vaulted ceiling.

The repairs included the current barrel-vaulted ceiling of the Main Hall.

It is L-shaped and four storeys high, with a barrel-vaulted ceiling.

The castle also boasts a barrel-vaulted ceiling making up the second floor which has been restored.

The southernmost of these has a well preserved barrel-vaulted ceiling.

They raised their torches to look up at the barrel-vaulted ceiling.