Ruins of the Crusaders' headquarters.

A little slice of Japan and its aesthetics in London's Holland Park.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Only a handful of these gorgeous historic waterwheels remain but even those are in danger from local unrest.

The patch of land below the memorial was gifted by the British to the United States.

The world's second-tallest flagpole stands proud despite dropping rank.

A building facade covered with the statues of 11 giants of Tajik literature.

18m long sarcophagus of a constantly growing dead prophet.

The Avenue of Mausolea is a series of grand palatial tombs.

The ruins of an ancient Zoroastrian Tower of Silence believed to be the earliest example of the traditional funerary practice.

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.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

Whitewashed mosque contains the world's largest carpet.

The largest falcon hospital in the world, caring for over 6,000 feathered patients every year.

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

This indoor ski resort has a mountain contained inside a mall.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

Charles Babbage's proto-computer, painstakingly brought to life.

A clock designed to run with perfect accuracy for 10,000 years.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.