The Most Remarkable Fortified Towers in the World
6 places in 5 countries · updated 13 October 2026
In short: By our ranking, the most remarkable fortified towers in the world are Tower of Hercules (Spain), Spasskaya Tower (Russia) and Belém Tower (Portugal). The list covers 6 fortified towers in 5 countries. The United Kingdom has the most, with 2. Last updated 13 October 2026.
A fortified tower concentrates a whole defensive idea into one vertical form. Without long walls to rely on, it had to stand by height, thick masonry and a single guarded entrance. That compactness is what makes the best of them so striking: a lone shape on an islet, a headland or a city wall, read instantly from a distance and remembered for its outline.
The towers here cover very different worlds. The Spasskaya Tower, built in 1491 to a design by Pietro Antonio Solari, is the main gate tower of the Moscow Kremlin and carries its famous clock. The Tower of Hercules in A Coruña is a Roman lighthouse still standing above the Atlantic. Belém Tower in Lisbon guards the Tagus in Manueline stone. Castle Stalker rises from a tidal islet on Loch Laich in the Scottish Highlands, and Craigievar Castle is a pink-harled Scottish tower house crowned with turrets. The diaolou of Kaiping in Guangdong are multi-storey fortified village houses that mix Chinese and Western styles.
The towers in this collection were chosen for how they look and ranked by beauty. Each has its own text, a photograph with its author named and a point on the map, and the section also opens by country on separate pages.
In this list
| # | Place | Type | Country | UNESCO |
|---|---|---|---|---|
| 1 | Tower of Hercules | Fortified tower | Spain | ✓ |
| 2 | Spasskaya Tower | Clock tower | Russia | |
| 3 | Belém Tower | Fortified tower | Portugal | ✓ |
| 4 | Castle Stalker | Fortified tower | United Kingdom | |
| 5 | Craigievar Castle | Fortified tower | United Kingdom | |
| 6 | Kaiping Diaolou and Villages | Fortified tower | People's Republic of China |
01 Tower of Hercules
Torre de Hércules
Spain · 6.3 km from A Coruña43.386° N 8.406° W
- UNESCO World Heritage
Luis Miguel Bugallo Sánchez (Lmbuga) · CC BY-SA 3.0 There were dozens of lighthouses like this one once, scattered around the edges of the Roman world. There is exactly one left that still works. The Tower of Hercules, built or substantially rebuilt during the reign of Trajan in the early second century AD, has been guiding ships into what's now A Coruña for roughly nineteen centuries, and it is both the oldest lighthouse in the world still in active service and the only Roman one still doing the job it was built for. Its original name, Farum Brigantium, borrowed directly from pharos, the Greek word that also named the famous lighthouse at Alexandria — a deliberate echo, from one wonder to another.
Did you know? A cornerstone at the base names the designer, Gaius Sevius Lupus, an architect from Aeminium, today's Coimbra in Portugal, who dedicated the work to Mars.
02 Spasskaya Tower
Russia · 0.5 km from Moscow55.752° N 37.621° E
Юрий Д.К. · CC BY 4.0 The Spasskaya Tower is the main tower of the Moscow Kremlin's eastern wall and the face that the Kremlin turns to Red Square: a fortified gate tower below, a tiered top with a hipped spire, the great clock, and a red star at the summit. Its height with the star is 71 metres. The lower part is the work of an Italian: Grand Prince Ivan III brought Pietro Antonio Solari from Milan, and a Latin inscription over the gate records that the tower was built in 1491. It was first named the Frolovskaya Tower after a Kremlin church that no longer exists.
Did you know? Each of the clock's four faces is 6.12 metres across, with a minute hand about 3.27 metres long and Roman numerals 72 cm tall.
03 Belém Tower
Torre de Belém
Portugal · 7 km from Lisbon38.691° N 9.216° W
- UNESCO World Heritage
Image by oneras from Pixabay The Tower of Saint Vincent, as it was officially named, was built in the 1510s and finished in 1519 to guard the mouth of the Tagus, completing a ring of river defences first planned by King John II and carried out by Manuel I. It stood on a basalt outcrop just off the Lisbon shore, and ships returning from India passed beneath it before reaching the city. The popular story that the 1755 earthquake shifted the river away from it is wrong; the tower was always close to the bank, and land reclaimed over the centuries simply caught up with it.
Did you know? For about 250 years, from 1580 to 1830, the dark vaults of the bastion served as a prison.
04 Castle Stalker
United Kingdom · 32 km from Fort William56.572° N 5.386° W
Ymblanter · CC BY-SA 4.0 Castle Stalker is a four-storey tower house standing on a small tidal islet in Loch Laich, an inlet of Loch Linnhe on the coast of Argyll. It owes its fame almost entirely to its setting: a single grey keep rising from a rock just big enough to hold it, reflected in still water,. The image is so complete that it has become one of the best-known views in the Highlands; at high water the castle seems to float.
Did you know? The name comes from the Gaelic stalcaire, meaning 'hunter' or 'falconer', and it is often translated as Castle of the Falconer.
05 Craigievar Castle
United Kingdom · 37.2 km from Aberdeen57.174° N 2.718° W
Anais Culot · CC BY-SA 4.0 Craigievar looks like the idea of a Scottish castle distilled to its essence: a tall, narrow tower, plain in its lower storeys, that bursts at the top into a crown of corbelled turrets, conical roofs, balustrades and gables. Its pink harling, the lime render that coats the walls, gives it a softness no stone keep can match, and set against the green hills of Aberdeenshire it has the air of an illustration rather than a fortress. It is one of the purest surviving examples of the Scottish Baronial tower house, seven storeys high and almost untouched since the seventeenth century.
Did you know? In 2019 a volunteer found what seems to be the original oak door, replaced in 1825 and long thought lost; it was restored and put on display.
06 Kaiping Diaolou and Villages
People's Republic of China22.262° N 112.521° E
Stefan Fussan · CC BY-SA 3.0 Across the flat farmland of Kaiping, in the Pearl River Delta of Guangdong, rise hundreds of tall fortified towers that look as if they had wandered in from several continents at once. These are the diaolou: multi-storey defensive houses, closed and fortress-like below, that burst at the top into an extravagant crown of balconies, columns, domes and roofs mixing Chinese and Western forms with complete freedom. At their peak in the 1920s and 1930s there were more than 3,000; around 1,800 still stand, scattered through the villages of the county.
Did you know? Fangshi Denglou, built in 1920, is known as the Light Tower because it was fitted with an enormous searchlight.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What is the most remarkable fortified tower in the world?
- On our list, Tower of Hercules (Spain) ranks first, followed by Spasskaya Tower (Russia) and Belém Tower (Portugal).
- Which country has the most fortified towers?
- In our collection, the most come from the United Kingdom (2), the People's Republic of China (1) and Portugal (1).
- What is a tower house?
- A tower house is a compact fortified residence built as a single tall tower, common in Scotland and Ireland from the late Middle Ages, combining a family home with defence against raids.
- What are the diaolou of Kaiping?
- They are fortified multi-storey village towers in Guangdong, China, built mainly in the early twentieth century, often with money sent home by emigrants, and combining Chinese and Western architectural details.
- How many fortified towers are on this list in the world?
- The list covers 6 fortified towers in 5 countries. The United Kingdom has the most, with 2.