One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

Macabre astrological automaton clock dating to the late 1400s.

Famously misunderstood wonder of the ancient world

Try not to get slimed in Tribeca.

Elevated freight railway turned wildly successful urban park.

Medicinal spa created with the discharge from a geothermal energy plant.

Bridge that died in war and was resurected.

This indoor ski resort has a mountain contained inside a mall.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

Malaysia's floating mosque.

Malaysian fireflies create a dazzling display as thousands light up in unison.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A beautiful opera house in the heart of Amazonia has recently restarted performances after a 90-year hiatus.

This striking, two-toned confluence of rivers is visible from space.

Home of the "true" equator.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Burial site of the world's most widely known researcher on the endangered mountain gorilla.

A strangely forgotten claimant to the much contested title of "Source of the Nile."

God's Saharan sandbox of wrath.

A fortified city, home to a remaining population of five families

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

The city-sized home palace of one of ancient Egypt's most powerful rulers gives us a rare look into the lives of the epoch's rulers.

One of its engravings is believed to be among the first representations of medical and surgical instruments.