
Bratislava Castle is the main castle of Bratislava, the capital of Slovakia. The massive rectangular building with four corner towers stands on an isolated rocky hill of the Little Carpathians directly above the Danube river in the middle of Bratislava. Because of its size and location, it has been a dominant feature of the city for centuries.

Castel dell'Ovo is a seaside castle in Naples, located on the former island of Megaride, now a peninsula, on the Gulf of Naples in Italy. The castle's name comes from a legend about the Roman poet Virgil, who had a reputation in the Middle Ages as a great sorcerer and predictor of the future. In the legend, Virgil put a magical egg into the foundations to support the fortifications. Had this egg been broken, the castle would have been destroyed and a series of disastrous events for Naples would have followed. The castle is located between the districts of San Ferdinando and Chiaia, facing Mergellina across the sea.

The Castle of Jadraque is a castle in the municipality of Jadraque, Castile-La Mancha, Spain. It sits on a hill commanding the plain of the Henares river. It is sometimes called "Castle of Cid" as it is mentioned in the poem Cantar del Mio Cid.

The Castle of Medinaceli is a medieval fortress in Medinaceli. It was built in the 9th century and rebuilt in the 15th century. Almanzor died here in 1002.

Castle of the Pomeranian Dukes - the only Gothic castle located on the coast of the Baltic Sea in Poland. The castle's formation is close to that of a square, with a tower measuring 24 metres in height. The castle's construction began in 1352, in the reign of Bogusław V, whose reign began the alliance with the Hanseatic League. In the eighteenth and nineteenth centuries the castle was used as a warehouse and a prison. Since 1930, the castle was turned into a museum.

Castle of the Pomeranian Dukes - a medieval castle in the town of Szczecinek, for the Pomeranian Dukes. The southern wing of the castle was built in the early fourteenth century, in the location of a former Slavic gord. Due to reconstructions in the sixteenth, nineteenth and twentieth centuries the castle has not kept its original characteristics.

The Cittadella, also known as the Castello, is the citadel of Victoria on the island of Gozo, Malta. The area has been inhabited since the Bronze Age, and the site now occupied by the Cittadella is believed to have been the acropolis of the Punic-Roman city of Gaulos or Glauconis Civitas.

The Castle of the Masovian Dukes is a Gothic castle located in Czersk, Masovian Voivodeship in Poland.

Fort Blockhouse is a military establishment in Gosport, Hampshire, England, and the final version of a complicated site. At its greatest extent in the 19th century, the structure was part of a set of fortifications which encircled much of Gosport. It is surrounded on three sides by water and provides the best view of the entrance to Portsmouth Harbour. It is unique in two respects. Firstly, it was built over five centuries from its original construction as a blockhouse in 1431 to the final addition of a submarine escape tower in 1953. Secondly, it is thought to be the oldest fortified position in the United Kingdom that is still in active military use though coastal fortification was abolished nationally in 1956, and it has been used only for medical and training purposes since 1999.

The fortifications of Mdina are a series of defensive walls which surround the former capital city of Mdina, Malta. The city was founded as Maleth by the Phoenicians in around the 8th century BC, and it later became part of the Roman Empire under the name Melite. The ancient city was surrounded by walls, but very few remains of these have survived.

The Ishiyama Hongan-ji (石山本願寺) was the primary fortress of the Ikkō-ikki, leagues of warrior monks and commoners who opposed samurai rule during the Sengoku period. It was established in 1496, at the mouth of the Yodo River, on the coast of the Seto Inland Sea. At the time, this was just outside the remains of the ancient capital of Naniwa, in Settsu Province. In fact, recent archaeological research has determined that the temple was established atop the ruins of the old imperial palace. The city has since grown around the site, incorporating the Ishiyama.

Nakagusuku Castle is a gusuku in the village of Kitanakagusuku, Okinawa, Japan. It is one of a number of castles built on the island of Okinawa by the Ryukyu Kingdom now in ruins. The legendary Ryukyuan commander, Gosamaru, built the fortress in the early 15th century to defend against attacks from the east by Lord Amawari of Katsuren Castle. Amawari attacked the castle in 1458 and defeated Gosamaru shortly before his own castle was attacked by Uni-Ufugusuku. The castle was visited by Commodore Matthew C. Perry in 1853, who noted that the walls seemed to be designed to absorb cannon fire. The six courtyards of this fortress with stacked stone walls make it a prime example of a gusuku. It was added to the list of UNESCO World Heritage Sites in 2000. It is regarded as one of the 100 most famous castles in Japan. Less than 50 metres away from the castle is the Nakagusuku Hotel ruins.

Pęzino Castle - a castle located in centre of the village of Pęzino, West Pomeranian Voivodeship; in Poland. The castle is located by the River Krąpiel and its tributary River Pęzinka. Currently, the castle is privately owned, its owner uses the stronghold primarily for hosting events, conferences and wedding celebrations.

Prokuplje Fortress was a medieval fortified town, located above modern day Prokuplje, Serbia. It is surrounded by Toplica river from three sides.

Shaki fortress is a fortress in Shaki, Azerbaijan. It dates to the 15th century.
Citadel of the Hồ Dynasty is a 15th century stone fortress in Thanh Hóa, Vietnam. It served as the Western Capital of the Hồ Dynasty (1400-1407).

Welsh tower houses were fortified stone houses that were built between the early 14th and 15th centuries. They are related to tower houses, which occur in considerable numbers in Ireland and Scotland and to a much lesser extent in England. A map showing the distribution of tower houses within the United Kingdom is given in Houses of the Welsh Countryside.