A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Taste the white whiskey that the United States' first president once distilled and enjoyed.

One man's hand-sculpted collection of colorful masks representing a host of gruesome spirits.

A waterfall runs right through the middle of this Taiwanese shrine to the hundreds of workers killed while building a nearby highway.

An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

The most famous location in China was home to whole dynasties worth of imperial rulers.

This tunnel looks like a sliver of Shanghai that's stuck in the past.

The powerful party began with a secret meeting in this shikumen in 1921.

A giant scale model giving a sneak peek at what urban planners see for Shanghai by 2020.

The once highest point in China blends symbolic design with a kick of adrenaline.

An out-of-place slice of France, smack in the middle of Shanghai.

An collection of Chinese propaganda posters from 1949 to 1979.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Elaborate tile work in this railway station tells the story of Portugal.

The stunning interior of this Gothic church is covered in ornate gold details.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The world's oldest bookshop still in operation.

In the middle of one of South America's most historic walled cities lies a bar with an enormous collection of Soviet memorabilia.

The colonial city's social history is reflected in its fanciful door knockers.

Perched atop the highest hill in Cartagena, this 17th-century convent offers spectacular views of the city.