Dover Castle’s secret tunnels

Dover Castle is a medieval castle in Southeastern England. The site has been fortified since Roman times, but the most interesting renovation took place during the Napoleonic wars around 1800.

Kowloon Walled City

Kowloon Walled City was a city within a city in Hong Kong. It was originally a Chinese military fort but after the British took over Hong Kong in 1898, it turned into something completely different.

Three 1000 year old pagodas

The Three Pagodas of Chongsheng Temple in Dali City, China, are an ensemble of pagoda towers. They have been built around the 9th and 10th century.