Places Siris Wants to Go

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

This former steel and coal plant is now a neon-lit industrial fantasia.

No need to strap in for a “ride” on this walkable roller coaster.

The monumental home of Prussia’s eccentric "Cannon King."

This "floating railway" is one of the world's oldest monorail systems.

This futuristic German television spire is actually the world's largest digital clock.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

This unique Renaissance castle was turned into a home for Nazi occultism.

The largest mosque in Germany.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

How did a lighthouse wind up in the middle of this landlocked German city?