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."

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

Something's watching you.

Romania's triumphal arch looks out over Bucharest.

This Transylvanian church has changed its denomination four times.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.

A huge boat-shaped hotel with a blood red pool and other oddities.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

This majestic building, where Brazil's coffee brokers once bought and sold beans, now houses a coffee museum.

Solitary monument dedicated to the beauty of nature.

The bookstore with bookshelves built into unlikely places.

The remains of a British railway rusting in the jungle mist of a Brazilian mountainside.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Budapest's Communist-era statues, banished to the suburbs.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.