An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Architectureal fantasy quarter of Rome.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This building features dozens of faces along its facade, although one is a bit chilling.

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

A subterranean display of public art and architecture.

When the rain falls, this drain system turns into a musical instrument.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

Ruins of a German Castle on top of a towering stone pillar.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A slice of central Asia in the middle of Berlin.

The fairy tale castle of the "fairy-tale king."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This historic stone bridge has an entire neighborhood clinging to its sides.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

A Milanese café entirely designed by the American director Wes Anderson.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This futuristic building is yet another architectural wonder in Dubai.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

A South African bar inside a hollowed out 6,000-year-old Baobab.

A supply store for traditional healers, this shop sells the hair of a dog--and its skin, skeleton, and reproductive organs, too.