Fredriksborg Fortress was erected to protect Stockholm at Oxdjupet, the only deep entrance. In 1735, this was Sweden's strongest fortress that came to protect the inlet for over 100 years. The hotel buildings were officers' residences during the same period, which were converted into hotels by SFV in 2011-2015. The hotel was given 15 rooms, period details have been preserved and adaptations have been made for modern hotel operations. The whole of Fredriksborg is classified as a national listed building. Historical guided tours are offered.

The hotel is located on a plateau about 30 meters up. The tower of the fortress reaches 60 meters. Fredriksborg is about 40 minutes by car, bus or RIB boat from Stockholm. The kitchen is of good class with broad know-how and Fredriksborg Hotel has high guest ratings for both hotel and restaurant.

Open all year round for pre-booked private and corporate events, as well as regular for private guests on weekends, summer and Christmas dinners. All or parts of Fredriksborg can be rented with exclusivity for e.g. conferences, courses, events, Christmas dinners, weddings, training weekends, filming, photography, private parties etc. The hotel is fully licensed and has the opportunity to be open until 03:00 by appointment.

Fredriksborg consists of about 46,000 sqm of natural and garden land and several parts and buildings;

The stone barracks from 1751 is the main building and hotel with 10 rooms, conference rooms, dining room and lounge. The conference room can accommodate 35 people in cinema seating and 16 in board seating, or 30 diners as a dining room. The dining room can accommodate 20 diners. The lounge can accommodate about 15 people in sofas etc. Bar at reception.

The officers' residence from 1724 is a hotel building with 5 rooms with direct entrance and a surrounding terrace.

The entire hotel has 15 double rooms, 10 of which have separable beds. 33 beds incl. extra beds. 12 rooms have WC/shower, 3 rooms have WC/bath. 12 rooms have lake views. 5 rooms have a terrace with outdoor furniture. 2 attic rooms, 1 chamber (suite), 4 smaller and 6 regular double rooms, 2 panorama rooms. All have TV/WiFi.

The orangery of 66 sqm is modern, can accommodate about 44 diners and has heating, fireplace, bar and sound system

The outdoor terrace next to the Stone Barracks and the Orangery has about 100 seats but can be expanded. South facing.

The Event/Wedding Tent next to the Stone Barracks is 150 sqm and can accommodate up to 140 seated.

Fredriksborg Fortress has a cannon floor of about 600 sqm, 7 m in ceiling height, good acoustics, 3-phase electricity and a bar/refrigerator. Accommodates 150 people. It can be used for music, exhibitions, events, etc. The rooftop observation tower can accommodate 15 people. The basement floor can possibly be used after adaptations/fire safety inspections.

Kaponjären (Kanontornet) has three floors, of which the upper one has about 90 sqm and 5m in ceiling height. Depending on the number of participants, adaptation and approval by the fire authority is required before use.

The Corps de Garde pier with guard cabin has a kitchen, refrigerator and 3-phase electricity. The jetty of about 500 sqm can accommodate about 100 seated, or 200 standing guests. Stone stairs down to Oxdjupet where ships can dock.

There is a guest jetty with a bathing ladder and buoys for leisure boats. Larger boats can dock against the north gable of the jetty.