Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An incarceration museum on the spot of possibly the oldest prison in England.

Hear the quietest sound from across the dome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Eighty million natural history specimens call this gargantuan museum home.

One part local history, 99 parts gruesome haunted house.

An unusual round church in London with a Templar past.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The decommissioned submarine is now the symbol of a small, inland Australian town.

From a distance, this statue of an eagle looks like a giant chicken on a stick.

You can climb to the top of the world's largest rocking horse.

This rare effigy of the author spent years lost in storage.

Three-story concrete ram with a permanent gift shop.

Everything about this over-size novelty animal is huge including its testicles.

One of the first big sculptures anywhere in Australia.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

There's nothing shrimpy about the world's largest artificial prawn.

One of the oldest theaters in Australia, it's also said to be haunted by a performer who died on stage.

The yawning remains of a complex naval fortress still haunt this Australian shore.

Popular tourist destination now stands as a memorial to Sam the koala.

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

A giant Australian fruit and tropical farm.