One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

The fifth-longest natural arch in the world, and the longest outside China.

Twisted buildings adorn the banks of the Rhine river.

This mountain tram provides stunning views while hanging from a single, steel thread.

Taumatawhakatangihangakoauauo tamateaturipukakapikimaungahoronuku pokaiwhenuakitanatahu.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

This blowhole is supposedly caused by a trapped monster.

Highly spherical boulders on the shores of New Zealand.

A unique botanical garden housed in three giant geodesic domes.

Used as an example in one of the first dictionary entries for "museum" in 1706.

An extraordinary "City of Caves" carved from solid stone.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Come for the flowers, stay for the bats!

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

Play heads or tails with thousands of different coins.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A complex of six forts embedded in the Rajasthan hills.