The neogothic Alexander Church was built in 1880-1881. The church was named after the Russian tzar Alexander II. It was damaged badly by fire in 1937, but renovated next year.
Nearby the church is Pyynikki Church Park, which functioned as a cemetery from the year 1785 to the late 1880's. Although the cemetery site has been a park over over hundred years, there are still many old tombstones existing. According the legend after Finnish Civil War (1918) many people were buried to the mass grave near the church.
Kristiansten Fortress was built to protect the city against attack from the east. Construction was finished in 1685. General Johan Caspar von Cicignon, who was chief inspector of kuks fortifications, was responsible for the new town plan of Trondheim after the great fire of 18 April 1681. He also made the plans for the construction of Kristiansten Fortress.
The fortress was built during the period from 1682 to 1684 and strengthened to a complete defence fortification in 1691 by building an advanced post Kristiandsands bastion in the east and in 1695 with the now vanished Møllenberg skanse by the river Nidelven. These fortifications were encircled by a continuous palisade and thereby connected to the fortified city. In 1750 the fortress was modernized with new bastions and casemates to protect against mortar artillery.