The Neptunus Family Stadium was brought into use in April 1999. Europe's most modern baseball stadium has fixed seating for over 2,500 spectators and 26 covered relations units on the top tier for sponsors, adding up to a total seating capacity of 2,760.

In addition to 12 locker rooms for sports club Neptunus, the stadium boasts various massage rooms and referee quarters and has a clubhouse located on the ground floor. On the first floor, there is a business lounge where the Gouden Drietand Business Club of DOOR Neptunus is stationed. The complex also includes a fully equipped fitness centre and has overhead lighting for evening matches. All this makes the Neptunus Family Stadium a prime location for baseball matches and competitions, such as the world-famous ENECO World Port Baseball Tournament which is organised here every two years.

As main location for the Baseball World Cup in September 2005, the entire complex received an upgrading. First of all, the outfield fences were moved back to comply with international dimensions (98 metres x 120 meters x 98 metres). To protect the players, the field was lined with blue padding. A batters-eye was placed in the mid-outfield and original yellow foul poles were put up at both ends.
Both in and around the outfield, various light fixtures were fitted in the light poles to meet light power requirements.
In June 2006, a long-cherished wish came true when an original, second baseball field was developed where the softball field had been. The former football training field was turned into a softball field.

In September 2005, the main football field was covered with artificial grass made in accordance with the latest norms.