At the heart of an otherwise bustling city lies some oddly abandoned and ignored historical ruins.

A former drinking water storage reservoir transformed into a sunken garden.

This church in Old Goa was established by eight Portuguese Franciscan friars who landed there in 1517.

Iran's "Rose Garden Palace," built during 131 years of rule by Qajar kings, consists of 17 stunning structures.

The largest masonic lodge in Cuba.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

This ice cream parlor serves scoops of flavors like rakia, medlar, and poppy seed.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

A retro Yugoslav congress, cultural, and business hall built in the 1970s, with an iconic world clock.

A pair of connected skyscrapers form this symbolic gateway.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

One of Manchester’s museums has gathered and preserved British political paraphernalia covering over 200 years.

Over 70 independent businesses have set up shop in this former Victorian department store.

Be on the lookout for the symbolic insect all over the city.

A 19th-century time capsule of travel, fiction, and historic texts still available to the public.

Have a seat with the father of modern computing at this Manchester monument.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A man throwing a giant severed hand towers over Antwerp’s main square.