| Althorp | The beautiful home of Lady Diana Spencer together with an exhibition celebrating her life and the island where she is laid to rest. |
| Belton | Set in a 1,300 acre deer park with 25 rooms open to the public. |
| Belvoir | Magnificent state rooms and art treasures plus annual jousting events. |
| Burghley House | One of the most impressive Elizabethan houses in England. Set amidst parkland where the deer roam freely. Home of the Burghley Horse Trials. |
| Deene Park | Home of the Brudenell family. A splendid manor house set amidst delightful parkland. |
| Fotheringhay Castle | Earthwork remains of the castle where Mary Queen of Scots was executed. |
| Grimsthorpe | Many state rooms with beautiful tapestries and art treasures. This castle was built in 1540 for Henry the VIII. |
| Kirby Hall | One of the most outstanding stone-built Elizabethan mansions in the country set in magnificent grounds where peacocks roam free. Home of the annual “History in Action.” |
| Lamport Hall and Gardens | Home of the Isham family. Outstanding paintings, furniture, china and books. |
| Elton Hall | Stands in the midst of unspoilt landscaped parkland, on a site where there has been a house since the Norman Conquest. |
| Lyveden New Bield | An unfinished retreat built by Sir Thomas Tresham. |
| Oakham Castle | Fine great Hall of the 12th Century. Unique display of Horseshoes forfeited by royalty and peers to the Lord of the Manor. |
| Rockingham Castle | Set high on a hillside, in a commanding position, this famous castle was built by William the Conqueror. |
| Southwick Hall | A family manor house dating from 1300, beautiful gardens. |
| Prebendal Manor House | The oldest manor in Northamptonshire. 14th Century medieval garden and museum. |