Romania's triumphal arch looks out over Bucharest.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A monument to the man who almost killed Hitler.

One of downtown Berlin's last reminders of its Communist past.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Iceland's tribute to its thankless civil servants.

This tiny museum's sizable collection is jammed into a former underground public toilet.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This stunning concert hall has become a symbol of Iceland's national recovery.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

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

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

A collection of short standing stones covers this hillside.

This ordinary-looking mailbox has a rather explosive history.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

A historic cave in Scotland once served as a hiding place for a famous Covenanter.

A sea cave with a waterfall and Viking past

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.