Buddha shrines hide within dark tunnels at this unique forest temple.

From mid-September to early November, dreamy fields of pink muhly grass spring up all over South Korea.

This 317-ton walkable art installation is an homage to Korea's "City of Steel."

This human-made pond is part of a Korean palace complex first built in the 7th century.

One of only a handful of seaside temples in Korea, this sacred space is home to a legendary healing Buddha statue and a traffic safety prayer pagoda.

A traditional village rooted in the Joseon Dynasty.

This pagoda was once the central feature of a Buddhist temple that no longer exists.

Numerical symbolism abound at East Asia's oldest observatory.

Buy your fish and have it cooked to order in this bustling, eight-floor seafood market.

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

The artwork is a community's ode to the "father of Irish tourism."

These engineering masterpieces are a dominant feature of the Belfast skyline.

This picturesque lighthouse at the edge of the Irish Sea looks like a giant stone pencil.

400 million years of erosion shaped these fascinating seaside caves, which made an appearance on 'Game of Thrones.'

This massive monument has been telling the time for 150 years—at a slight angle.

It was once nicknamed "the most bombed hotel in Europe."

These murals stand as reminders to the troubled history of this Northern Ireland city.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

These barriers stand as stark reminders of Northern Ireland's troubled past.