A miniature city, once ruled by the Queen of the Netherlands.

France's high-tech, future-themed amusement park.

A hidden world of exotic succulents and cacti.

An obsolete form of timekeeping still marks the hour in this adapted 19th century lighthouse.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Playable, historic pinball machines fill this Alameda museum.

A B&B on a Victorian lighthouse station in San Francisco Bay.

Haunting and beautiful trees, doomed to die.

Medicinal spa created with the discharge from a geothermal energy plant.

This beautiful, historic church looks like something out of a simpler past.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

This stunning concert hall has become a symbol of Iceland's national recovery.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

The miraculous hydrant that saved the Mission District in 1906.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This turn of the century masterpiece has a mysterious goaty interloper.

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