Golden Gate Park's historic collection of plants.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Pompeii's less famous neighbor is still revealing her secrets.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

Massive galleon from a box-office bomb docked in Genoa.

Fantastic views and thousands of love locks.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This modest marker near Notre Dame identifies the very center of Paris.

This demon atop the Notre-Dame de Paris looks utterly bored.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

A Gothic cathedral created from volcanic rocks.

Historic medieval fortified city in southwest France.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

This historic Victorian hotel has a scandalous history of affairs and murder.

A monument stands at one of the starting lines of the Trans-Canada Highway, formerly the longest uninterrupted highway in the world.

One of the first big sculptures anywhere in Australia.

There's nothing shrimpy about the world's largest artificial prawn.

You'll find the little birds tucked within the rocks of this Australian beach.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

Come for the flowers, stay for the bats!