The hallucinogenic center of the ancient world.

The celebrated eyesore created by starry-eyed sweethearts.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

One of the world’s most colorful cemeteries, where each pigment is symbolic.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

Highly spherical boulders on the shores of New Zealand.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.

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.

It houses the remains of a 17th-century version of the Titanic.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The attic of a four-century-old canal house hides a clandestine church.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

The national park was once a plantation estate.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Hear the quietest sound from across the dome.