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

History is on display in this hall, which has served as the seat of city government for centuries.

This museum houses two of Mexico's most impressive Aztec monoliths.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

These subterranean models show Mexico City's central square during three different eras.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Part bookstore, part café, and part forest.

Deep into the lower floors of Pike Place, find a date with fowl fate.

A touching tribute to the "Wonkey Donkey."

Profile of a sleeping person 4km long in 250m high cliffs.

The giant birds honor two native North American species.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The history of Tel Aviv told through a work of art.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

This 12-seat movie theater is the smallest in the world.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

Over the last century, this elegant columned facade has been home to the headquarters of a bank, several nightclubs, and a restaurant.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Known as "Toronto's Flatiron."

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.