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Photos show the inside of the well-preserved hidden tunnels. Secret underground passageways discovered in ruins of 4,300-year-old city in China Skip to main content
The only cave system in the country, situated within the proper of a Philippine city, the Kutawato Caves is located in the foot of Pedro Colina Hill. It has a lot of hidden underground passageways. One of these is the tunnel connecting the cave to Tamontaka Church, the oldest church in the city. [1]
An example of a medieval building with many subterranean passages is Prague Castle. In the Middle Ages underground passages were dug out mainly for purposes of defence. Later drainage conduits transported waste water to the foot of the castle wall and then let it fall freely over the slope of the bare cliff face into the bed of the Brusnice stream.
Hidden passages and secret rooms have been built in castles and houses owned by heads of state, the wealthy, criminals, and abolitionists associated with the American Underground Railroad. They have helped besieged rulers escape attackers, including Pope Alexander VI in 1494, Pope Clement VII in 1527 and Marie Antoinette in 1789.
Go underground to visit these unusual spaces across the country, from caves to work space to historical artifacts.
An extensive network of underground spaces was constructed at his Welbeck Abbey estate in the 19th century, with a total length of around 24 kilometres (15 mi). [11] It included hallways, a ballroom, a billiards room, a library and a 900 metres (3,000 ft) tunnel from the mansion to the riding house, wide enough for several people to walk in ...
Rays of sunlight slice through pools of crystal water as clusters of fish cast shadows on the limestone below. Now, construction of President Andrés Manuel López Obrador’s crown jewel project ...
The Seattle Underground. The facade seen here was at street level in the mid-1800s. The Seattle Underground is a network of underground passageways and basements in the Pioneer Square neighborhood of Seattle, Washington, United States. They were located at ground level when the city was built in the mid-19th century but fell into disuse after ...