Many mysteries surround these objects questioning whether they are cannonballs at all.

Presented to the city in 1910 for public use, these brass markers show varying lengths.

This arcade is one of the last places to catch a public performance by the now-defunct ShowBiz Pizza's house band of animatronic animals.

A mysterious burial crypt that was rediscovered inside a cathedral in Velha Goa.

This ancient causeway can flood daily, leaving Mersea Island as a true island for hours at a time, and cutting its 7,000 residents off from the mainland.

This miraculous well is said to heal the sick, grant wishes, and tell the future.

Since 1768, the pillar at Guildhall Market in Bath has been a hub of economic transactions.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Learn about our ancestral eating habits at the passion project of an archeologist.

A collection of windows created by two of the foremost leaders in the British Arts and Crafts Movement.

This mysterious anthropomorphic statuette is on display at the National Museum of Oman.

One of the most studied Iron Age settlements in Europe.

World War II air raids over Bristol dislodged this fragment of tram line that ended up embedded in a churchyard.

A menagerie of concrete animals brought together from across New York City's parks.

An ancient yew tree and holy well nestle beside a remarkable 13th-century church.

A doorless and windowless folly in England that evokes curiosity over its mysterious origins.

Once believed to be a sacred Roman legionary symbol, this bronze figure inspired the 1954 novel 'The Eagle of the Ninth.'

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

This unusual sculpture is sometimes partially, sometimes fully, submerged.

Dedicated to the five postal workers who died aboard the doomed ocean liner, this plaque was made from a spare propeller from the Titanic.

Look up from the busy streets to discover how time is kept!

With a bundle of matches in one hand and a mobile phone in the other, this sculpture is a modern take on Hans Christian Andersen's poignant fairy tale.

A former Victorian swimming pool is now a tranquil and secluded park.

The walls of this village church are decorated by two unique religious works of art.