Quite simply the largest tree in the world (by volume).

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

This enormous World War II relic is one of the largest wooden structures in the world.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

A nursery specializing in strange and beautiful succulents and cacti.

One of Hollywood’s favorite government buildings.

Historic funicular railway, believed to be the shortest railroad in the world.

A modern day curiosity cabinet.

Explore 10 acres of environmental sculptures.

The legendary building that needed ghostly approval before being built.

Commonly acknowledged as the only public monument to the Devil himself.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A lush indoor jungle fills this bustling Madrid transportation hub.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

These ornate arches show how the course of the River Thames has changed.

A living memorial to the trees London lost during the Great Storm of 1987.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Resting place of Hollywood's immortals is also site of summer film screenings.

A library of rare occult books in Los Angeles.