This fantastical icy castle is built anew every winter.

3,000 market stands in five former Zeppelin hangars.

Swedish skyscraper with a 90° twist.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

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

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

The oldest church in Iceland is one of the few to feature ornate decoration.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

Macabre astrological automaton clock dating to the late 1400s.

The once highest point in China blends symbolic design with a kick of adrenaline.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

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

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

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

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

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.