Canal connects two rivers: Węgorapa and Gołdapa. It was designed in 1726 by John Suchodolca. The canal is used to drain excess water from the headwaters of Gołdapa river. The canal is inhabited by brown trout and in the forests around one can meet a deer or a wild boar rather than a man.
The baroque style palace was built in eighteenth century. During world war I, it was partially destroyed and then rebuilt in the 20s. As a result of reconstruction it has lost its baroque character. The original look of interior is known only from the photographs. The last private owners of the palace until 1945 was Altenstadt family. Then, for many years it was used by PGR and housed a school.
In the peripheries of Zakałcze Wielkie village there is an evangelical cemetery and an impressive tomb of Steinert family, coming from around 1860. The tomb is in the shape of a cube, and the whole thing is topped with a convex roof. There is an inscription on the cross saying - "Martha Steinert (1863-1891)" , on the pole gate someone has engraved the heart and the date "1863".
Today, little remains of the railway bridge over the Sapina river. It was part of a vast railway investment and technically advanced engineering project. During World War I German sappers blew up the eastern span. It was rebuilt and bravely served until 1945, when the Russian troops appeared on the horizon to liberate Eastern Prussia from Nazi captivity. Germans expected an attack and mined the bridge, but fortunately no one ever detonated the bombs. It was later on blew up by the locals to stop Russians from further looting. Nowadays, the ruins are a historical place and sightseeing attraction.