These "50 Fortresses" have been unearthed in the ancient oasis of Khwarezm.

Ancient barriers wrap around what was once an important stop along the Silk Road.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

An eccentric museum dedicated to Islam Karimov, the former dictator of Uzbekistan.

Inside this art museum resides one of Glasgow's most famous musical instruments.

An ingenious way to immortalize the inventor of universal time.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

Rusting ships sit in a desert where a sea used to be.

Its collection includes a broad array of social, geographic, graphic design, and political history.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This inn of the court provides a fascinating window into London’s legal and architectural history.

Public access to clean drinking water was an instant hit among the masses.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

The haunting remains of a beautiful old plant nursery founded in the 1850s.

A tribute to a child prodigy who died way too young.

The heads of two giant mythological water horses honor Scotland's horselord past.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

This emblematic representation is said to bring the students good fortune.

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.