This legendary urban waterfall creates a dazzling display of rainbows.

A mysterious shape catches the eye in this 16th-century painting.

This tallest folly in the world began its life as an elaborate factory chimney.

A copy of the brutal decapitation device that predated the French Guillotine by about 200 years.

This Georgian architectural masterpiece is the only cloth hall left in Britain.

A plaque marks the humble origins of an artistic muse who embodied the ideals of Pre-Raphaelite beauty.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

The unusually large seat sits atop the base of a ruined temple.

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

Go surfing on this urban wave, "hacked" by local surfers.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

This strange statue features a bust of the famous composer plopped atop a woman's body.

Four-story slides send people whizzing through the math department at this Munich university.

A surprisingly detailed model of one of the most powerful telescopes in the world.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

This red London phone booth once stood in front of Buckingham Palace and was used by the queen.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

The medieval network of canals hidden underneath the city is opened to explorers each year.

This 19th century cyclorama acts like an analogue time machine to a different era.

The beautiful, ornate weather station is the most popular geocache in Salzburg.