Door County’s newest entry on the State Register of Historic Places is a three-for-one experience in the Town of Liberty Grove.

The Wisconsin Historical Society announced last week that the Tostenson Pier Archaeological District was officially added to the register. Unlike some entries on the State Register, the Tostenson Pier Archaeological District consists of a pier and two shipwrecks: the scow schooner Maria and the schooner Sardinia.

The two vessels played a critical role in the area’s lumber industry. The Maria sank near the pier in 1883, while the Sardinia followed in 1900.

According to the Wisconsin Historical Society, the pier cribbing and shipwreck sites remain fully submerged beneath the water’s surface in 10 to 15 feet of water.

Placement on the State Register of Historic Places prohibits divers from removing artifacts from the sunken vessels and makes it a crime to further damage the sites.

The Maria and the Sardinia are two of more than 240 shipwrecks surrounding Door County, many of which are also listed on the State Register of Historic Places.