The only medieval bridge in Britain with its defensive tower still in tact.

The longest and tallest aqueduct in Britain can actually be sailed across.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Be on the lookout for the symbolic insect all over the city.

The small bright red pillar survived the 1996 Manchester bombing virtually unscathed.

This sculpture is an instrument played by the swell of the seas.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This unattributed sculpture in Amsterdam is hiding in plain sight.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Giant reed houses made in the marshes of Southern Iraq.

Live out your childhood construction fantasies in this one-of-a-kind gyrating hotel.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

A beautifully eclectic mix of architectural styles.

A floating cat sanctuary on an Amsterdam canal.

Concrete strongholds stand guard over the Golden Gate.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

This giant temperature attraction created some giant electric bills.

A museum dedicated to a Cold War era sausage.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.