The Fjäle farm was established c. 100 AD, and remains of two large iron age houses are still visible on the site. After 7th century AD the large iron age houses were replaced with smaller ones not far away from the old houses. During the 12th century a smaller farm was separated from the main farm, and set up in the northern end of the peoperty. The farms were burnt down during 14th century, possibly during Denmark’s attack to Gotland, and were never rebuilt.

Eketorp is an Iron Age fort in southeastern Öland, which was extensively reconstructed and enlarged in the Middle Ages. Throughout the ages the fortification has served a variety of somewhat differing uses: from defensive ringfort, to medieval safe haven and thence a cavalry garrison

The indigenous peoples of the Iron Age constructed the original fortification about 400 AD, a period known to have engendered contact between Öland natives with Romans and other Europeans. The ringfort in that era is thought to have been a gathering place for religious ceremonies and also a place of refuge for the local agricultural community when an outside enemy appeared. The circular design was believed to be chosen because the terrain is so level that attack from any side was equally likely. The original diameter of this circular stone fortification was about 57 metres

  It was built probably in the 6th century and enlarged through Middle Ages. According old tax reports dating back to the year 1450, Gråborg was owned by Vadstena abbey and functioned as a some kind of trade center. It was used for defence against Danish even in 1677. Gråborg Castle consisted of a circular wall, about 4-7 meter tall. There were three entrances and one of them was vaulted in the Middle Ages. Archaeological excavations have revealed lot of findings, which are stored today in Kalmar Museum.

 It is also one the largest churches in Sweden. The history of cathedral is traced from the 11th century and it was inaugurated as a cathedral around 1150. The current appearance is from the 13th century. The current Gothic design

Uppsala Cathedral is the largest and tallest cathedral and one of the most impressive religious buildings in Scandinavia. Originally built in the 13th century under Roman Catholicism and used for coronations of the Swedish monarch.The interior ceiling and walls of the cathedral were decorated in neo-Gothic style. Some depictions, such as one of the Reformation’s Martin Luther, added figures beyond the cathedral’s medieval heritage

One of the most significant political events in Scandinavia took place at Kalmar Castle in 1397, when the Kalmar Union was formed – a union of Denmark, Norway and Sweden.The first defensive construction, a round tower, was built on Kalmarsund in the 12th century concurrently with the harbour. renaissance castles.

Vaxholm Castle was originally constructed by Gustav Vasa in 1544 to defend Stockholm against shipborne attacks from the east, but most of the current structure dates from 1833-1863. The stretch of water below the building was formerly the main sea route to Stockholm.

Vadstena Castle was originally built by King Gustav I in 1545 as a fortress to protect Stockholm from enemies from the south. The fortress consisted of three smaller stone buildings facing the lake, Vättern, three 31 meter wide ramparts, a courtyard, a moat and four circular cannons turrets.

 Skokloster Castle was built in the Baroque style between 1654 and 1676

The castle armoury and library are particularly noteworthy, both founded on Wrangel’s collections of weapons and books and enriched and enlarged by other seventeenth- and eighteenth-century aristocratic bequests, such as those by Carl Gustaf Bielke. The armoury contains the largest collection of personal 17th century military weapons in the world.

The house of East India Company was built between 1750-1762. Today it hosts the city museum, archaeological museum and etnographic museum.  The main goods were silk, tea, furniture, porcelain, precious stones and other distinctive luxury items.