From a 1930s bathing beach to a 1970s dumping ground, this stretch of Buenos Aires is now its largest and wildest reserve.

The Estatua de la Libertad stands discretely on an obscure tangent path in Barrancas de Belgrano.

One of the few remnants of an extensive tram network that once made Buenos Aires the “City of Trams.”

One of the oldest colonial buildings still standing in South America.

The southernmost postal office in South America.

You have to know where to look in this rather ordinary-looking square to find hints of its past as a dissidents' cemetery.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This museum houses an imposing skeleton army comprised of creatures great and small.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This urban park is home to monkeys and a number of endangered plants.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

The final resting place of the liberator of Argentina is guarded around the clock by two soldiers.

An intriguing antique iron Ferris wheel that most locals are sure was designed by Gustave Eiffel.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

The house of a former Argentinian president stands protected within a large glass case.

One man's quest to collect artifacts from every aspect of human life has resulted in this eclectic Argentinian museum.

This magnificent abandoned hotel has long been haunted by its Nazi past.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

With its vast selection of books, comics, and records, this nearly 70-year-old open-air market always rewards the patient browser.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.