The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Copenhagen's celebrated theme park and gardens.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

A massive underwater sinkhole made famous by Jacques Cousteau.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

Neo-cave art on the macro scale.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Picturesque ruins once held off mighty armies.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

A strangely forgotten claimant to the much contested title of "Source of the Nile."

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.