2017, the old buildings were turned into a whiskey distillery, with an associated restaurant. The City Gate (Landporten) was the main entrance into Nyborg city, and the only way inside after dark until 1869. The current version of the gate is from 1666. The road leading up to the gate from the outside of the city is known as Lindealléen. Trees were planted on this street in 1806. Five passage graves are located in the forest by the village of Sulkendrup, one of which collapsed only a few years after having been built sometime during the Stone Age. Despite the collapse, the passage grave were continued to be used to bury the dead. Sulkendrup Passage Grave (Sulkendrup Jættestue) is today open to the public, after having been renovated in 2014, to prevent it from collapsing. Lindeskov Burial Mound (Lindeskov Langdysse) is the longest burial mound in Denmark, with 168 meters in length. It is located near Lindeskov, and originates from the Stone Age. There are several other burial mounds in the area. Knudshoved Lighthouse (Danish: Knudshoved Fyr) is located on Knudshoved and was built in 1948. A lighthouse had been located on Knudshoved since the 1700s. Nyborg Town Hall is located near Nyborg Castle, and was built in 1799 and expanded in the 1800s. Nyborg Voldspil is an open-air theatre on the fortifications around Nyborg Castle. It first started in 1939, where it performed an original play named Danehof i Nyborg (Danehof in Nyborg). Many well-known Danish actors have started their career in Nyborg Voldspil, including Thomas Eje, Jakob Sveistrup, Julie Lund and Ulrich Thomsen. Castles and manors There is a large amount of castles and manors on the island of Funen. Many parks and forests owned by the manors are open to the public, or used for private hunting. Many castles are used for events and hotels. Juulskov is a manor located 6 kilometers west of Nyborg, and owns 187 acres. The first mention of Juulskov is from 1365, and the main building was built in 1590 and rebuilt in 1797. After a fire in 1862, it became necessary to rebuild the main building again. Juelsberg is a manor located north-west of Nyborg, and owns 901 acres. The manor was constructed around the year 1200, by order of the crown. During the Dano-Swedish War, the manor's castle was entirely destroyed and the crown decided to sell the manor rather