Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Frequent fliers welcome in this airplane hotel.

A Swedish phone box converted into an informal village library.

Sweden's oldest street has not changed for nearly a millennium.

An impressive ensemble of sculptures that survived the Soviet regime.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

Ozymandias’ time-keeping temple.

In Egypt's expanding metro area, many of the neighbors are dead.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This monument is a stark reminder of the horrors of the Zanzibar slave trade.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Remnants of cone-shaped fascist bomb shelters in Milan.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Iceland's tribute to its thankless civil servants.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

Akureyri is home to an oversized can of one of Iceland's favourite beers.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.