The Aqueduct of Valens (Turkish: Valens Su Kemeri or Bozdoğan Kemeri, meaning “Aqueduct of the Grey Falcon”) is a remarkable Roman engineering feat and one of Istanbul’s most iconic ancient landmarks.
Built in the 4th century AD, it formed a key part of a vast water supply system that sustained Constantinople (modern-day Istanbul) for over a millennium. Spanning a valley in the city’s historic peninsula, it exemplifies Roman hydraulic ingenuity, with its robust limestone arches still standing tall amid urban bustle.
Construction began under Emperor Constantius II around 345 AD, but it was completed in 373 AD by Emperor Valens, after whom it is named. This was just five years before Valens’ defeat at the Battle of Adrianople in 378 AD, which exposed Thrace to invasions. The aqueduct addressed the growing water demands of Constantinople, founded by Constantine the Great in 330 AD, which had outgrown earlier systems from the Hadrian era (117–138 AD).
The full system stretched up to 268 ...
The Trans-Siberian Railway is the world’s longest single continuous rail line, spanning about 9,289 kilometers from Moscow to Vladivostok across eight time zones, vast taiga forests, steppe, mountains, and 16 major rivers.
Construction began in 1891 under Tsar Alexander III, with Tsarevich Nicholas II laying the first stone in Vladivostok. The project aimed to unite the Russian Empire, boost trade with Asia, and develop Siberia’s resources.
Built in sections from both ends amid harsh terrain and permafrost, the full Russian route (avoiding earlier Manchurian shortcuts) was completed in 1916. It later supported Soviet industrialization, World War II logistics, and remains a key passenger and freight corridor operated by Russian Railways.
The premier service is the Rossiya train number 001/002, a comfortable firmeny train with renovated carriages featuring air conditioning, power outlets, USB ports, and showers in some cars. It offers first-class (two-berth), second-class kupe (four-berth), and...
The Trans-Siberian Railway is the world’s longest single continuous rail line, spanning about 9,289 kilometers from Moscow to Vladivostok across eight time zones, vast taiga forests, steppe, mountains, and 16 major rivers.
Construction began in 1891 under Tsar Alexander III, with Tsarevich Nicholas II laying the first stone in Vladivostok. The project aimed to unite the Russian Empire, boost trade with Asia, and develop Siberia’s resources.
Built in sections from both ends amid harsh terrain and permafrost, the full Russian route (avoiding earlier Manchurian shortcuts) was completed in 1916. It later supported Soviet industrialization, World War II logistics, and remains a key passenger and freight corridor operated by Russian Railways.
The premier service is the Rossiya train number 001/002, a comfortable firmeny train with renovated carriages featuring air conditioning, power outlets, USB ports, and showers in some cars. It offers first-class (two-berth), second-class kupe (four-berth), and...
The Trans-Siberian Railway is the world’s longest single continuous rail line, spanning about 9,289 kilometers from Moscow to Vladivostok across eight time zones, vast taiga forests, steppe, mountains, and 16 major rivers.
Construction began in 1891 under Tsar Alexander III, with Tsarevich Nicholas II laying the first stone in Vladivostok. The project aimed to unite the Russian Empire, boost trade with Asia, and develop Siberia’s resources.
Built in sections from both ends amid harsh terrain and permafrost, the full Russian route (avoiding earlier Manchurian shortcuts) was completed in 1916. It later supported Soviet industrialization, World War II logistics, and remains a key passenger and freight corridor operated by Russian Railways.
The premier service is the Rossiya train number 001/002, a comfortable firmeny train with renovated carriages featuring air conditioning, power outlets, USB ports, and showers in some cars. It offers first-class (two-berth), second-class kupe (four-berth), and...
