Hang out with thousands of butterflies in one of the world's largest such enclosures.

Cartoon clouds and nature-inspired murals have transformed the streets of Kuala Lumpur.

The largest Chinese cemetery in the world outside of China dates back to the 15th century.

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

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

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A naturally beautiful, seemingly bottomless deep blue spring.

The "dragon babies" of southeastern Europe.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

A spherical "micro-nation" in the heart of Vienna.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Special benches that play Chopin's music are scattered throughout his native city.