The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

The only castle in North America to ever house European sovereigns.

The now-public home of a renowned art collector is full of unique pieces from viceregal and 19th-century Mexico.

In 2008, this Mexico City metro station was the site of an hours-long fight between emo, punk, and goth groups.

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

The former Mexican president kept the bullets that killed his predecessor on display in his home, now a museum.

A Mexico City subway station boasts a hidden museum, complete with a working radio booth.

Its incredible collections are dedicated to preserving Mexico's film history.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Frida Kahlo's childhood home, now a museum of her life and works.

A curious museum of old video game consoles hidden in the back of a store.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

This clock was gifted to Mexico as a show of gratitude for its long history of welcoming Arab migrants.

This covert museum showcases booties worn by a rescue dog and slippers owned by Queen Elizabeth II.

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

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

Carved fountains poignantly placed in parks and in front of special monuments.

Fantastic views and thousands of love locks.

Somber memorial to the May 10, 1933, book-burning which took place on this spot.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

A rare chance to ride one of the few continuous elevators still in operation.

It’s fun to stay at the YMCA… but at this London outpost, it’s even more fun to eat the Bombay aloo.

This historic London residence was once the womb of Scientology.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.