These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

The internet as provided by a James Bond villain.

It's good luck to be mocked by this monkey.

A gigantic collection of teeny, tiny books.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

A Zoroastrian funerary tower where excarnation rituals are carried out is threatened by the area's dwindling vulture population.

Why is there a vintage Rolls Royce in this Buddhist temple?

This elaborate temple was built around one of the Buddha's teeth.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

Giant nude woman of Tijuana is also the artist's home.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

Home to 200 plaster casts of Scandinavian proboscises.

This cuddly rodent has a place of honor at a Russian institute for genetic research.