This massive water spout has been luring visitors for hundreds of years, some to their death.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Visitors can swim with vicious predators in Crocosaurus Cove's plastic daredevil enclosure.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

One of the best beaches in the entire world.

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

The artist behind this historical depiction of transportation remains a mystery.

A colorful sculpture of an Australian symbol patrols an otherwise ordinary traffic island.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The real life town from the Pied Piper of Hamelin has a mechanical puppet show that retells the famous story many times a day.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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

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

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

A marvel of Byzantine engineering under the streets of Istanbul.

Nordic giants resurrected from the sea and restored to their former greatness.

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.

Two stone columns flank the grand Venice square, but there were supposed to be three.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Go inside to really appreciate this 500-year-old technological masterpiece.