New Zealand's epic shrine to all things puzzling.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

Clusters of huge boulders in the Australian Outback.

The most confusing clock in New York.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This antique prison is a tourist attraction with a sordid past.

This 19th-century island fort built to protect against an invasion by sea.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

This Great Dunmow pond was a breeding ground for medical leeches, as well as the testing ground for the world's first lifeboat.

Designed to celebrate the queen's 40th birthday.

A 142-foot-tall Q-tip on Bristol's skyline.

England's most notorious suicide spot.

A student driver's nightmare.

One of the oldest remaining Catholic churches in England is home to the hand of a 7th-century saint.

Down a pint of ale where the Bishop of Ely's servants slept in 1546.

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

This may be the last of London's wooden pavements, which were once a common sight in the city.

A famous burial ground with a history both grim and literary.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.