Mountain where Jesus was first tempted by the Devil.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

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

A beautiful but toxic fountain of mercury.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

A network of fortifications that never saw conflict.

New Zealand's only running funicular railway.

Nature's slip and slide.

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

Eat your Big Mac in a DC-3.

Handcrafted thermal spa washes away each night with the tide.

Australia's oldest artists' colony.

Largest maize maze in the Southern hemisphere built with GPS technology on more than two acres.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

Once the path of a railway tunnel, now home to thousands of glowing insects.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.