Small church on top of a huge rock column.

Celebrated as a center of civilization, the remains of the ancient city have been nearly destroyed by greed, egoism, and war.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

Hydraulic systems in an ancient underground Iranian city.

Iran's colorful terraces are a rare geological masterpiece.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A geological oddity topped with a 2,000-year-old pagan temple.

Cherry blossom season comes early in this Japanese town where pink flowers line the streets and riverbanks.

A massive wintry wall of snow up to 66 feet tall flanks a highway through Japan's mountains.

Every color in the rainbow awaits.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

Every autumn, this hillside is ablaze with red summer cypress.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An exquisite tunnel of cascading flowers.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

These layered sandstone mountains in China look like they are made of pressed crayons.

An Aztec snake god has taken the material form of an apartment complex.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Experience park where visitors are told to expect the unexpected.

The remains of diamond fever taken over by the desert.

Most-visited and most-photographed slot canyon in the American Southwest.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.

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

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.