Located on the northwest section of Boca Chita Key, delimited by Biscayne Bay in the north and west and a half ruined stone wall on its southern side, it contains three historic buildings and the Boca Chita Lighthouse.

They built many structures which included a chapel, a lighthouse, a pavilion for holding picnic, a generator room, and also a garage.

[10] The August Geiger Firm were the architects and builders of the structures, which were built in modern architectural style with use of limestone, concrete and asphalt.

[11] The retreat was a popular venue for holding parties when Honeywells and their guests crossed over to the island from the Miami beach in luxury vessels.

[3] Built at the north end of the harbour, in a tapered shape with “concrete bricks laid in common bond with the exterior clad in uncoursed limestone.” At the base the tower is 21 feet (6.4 m) in diameter and is founded on a 28 feet (8.5 m) square concrete base.

During Hurricane Andrew in 1992, the windows of the lighthouse were damaged and were replaced with funds provided by a friend of Honeywell.

[15] The dome of the lighthouse was also under repairs since July 2013 (damaged panels) and was expected to be ready by end of August 2013.

[4] As the lighthouse is not functional it can be visited (during September to May and some days during the summer months) only when the park staff or volunteers are available there.

Above the concrete rafts ten square piers are raised along the longer length of the pavilion.

The cornice and frieze are supported by the piers and above this is the roof in a hip shape covered with asphalt shingles.

[8][6] The next orientation of the wall was to then turned north for a length 155 feet (47 m) and ending close to the engine house.