Nowhere in Mexico City does one feel the collective weight of the largest population in North America more than on Avenida Lazaro Cardenas, the traffic artery that gushes a surfeit of humans and cars up the heart of the city’s downtown. The gutters stink of rotting fruit. Dirt and littered garbage encrust the sidewalks. And, at rush hour, walking a block means suffering a gauntlet of elbows and hands pushing at you and past you. For the most part, the businesses that line this street offer little comfort. Goods lie in heaps on carpets or hang two feet deep upon the walls of stores seemingly designed to be fire hazards, cramming too many people onto too little floor space.

Mexico City may be a sprawling metropolis of 21 million, but on its edge is an oasis of green unlike any other in the world. Known as Xochimilco, it is the last part of the city that preserves an ancient system of canals and farms first built by the Aztecs when the area was on the edge of a long-gone lake.

Once the hub of a trading empire that connected Macau in the east to Rio de Janeiro in the west, Lisbon today can at times feel like a sleepy town of nostalgic storefronts and scenic churches. But that’s only its façade. Take a closer look and you’ll discover a city that still maintains deep-rooted links around the world – just consider the local obsession with African piri piri sauce. But there’s an even stronger tie to Portugal’s past in Lisbon, one that can be found in the form of the city’s communities from the former colonies. Though integral elements of Lisbon life, these communities can sometimes be an invisible presence in their adopted land, pushed out to the periphery of the city.

On a narrow and, until recently, slightly forgotten street in Lisbon’s city center, a simple Cape Verdean eatery is holding its own. As one of the few tascas serving up African dishes in this part of town, Tambarina, with its dozen tables and keyboard and mics set up in the corner, bears testimony to this urban quarter’s historical connections to the people of Africa’s northwestern archipelago.

It’s Sunday morning at La Pignasecca market in Naples and time is in flux. Picture a Boccioni painting: movement is blurred, there is an inter-penetration of objects, speeding vehicles and sound – a frenetic moment in the Futurists’ imagination. The city rises as engines splutter, traders hustle, klaxons yelp. Santa Maria di Montesanto spews punters out into the marketplace after mass; men peel off, heading home to check on the simmering ragù; groomed teenagers peacock on mopeds as groups of women push in line to pick up their last-minute order of fresh pasta, charcuterie and squid. The church bells chime: it’s lunchtime. Anticipation is in the air.

From Rio to Venice, from Cologne to New Orleans and from Patras to towns all over Greece, Catholics and Orthodox (along with believers and nonbelievers of every description) celebrate Carnival – the three weeks preceding Lent – with parades, masquerades, pranks, Dionysian revels and Lucullan feasts focusing on roasted meats. After all, the word “carnival” is thought to have come from the Italian carne levare or “abstain from meat” – which is also the meaning of the Greek Apokreas – and heralded a time when many religions prohibited consuming flesh during the sacred fast before Easter.

This chicken and rice cart in Istanbul's Unkapanı quarter serves the city's best, and there are many imitators that try to capitalize off of its good name. Fortunately, our Old City walk stops by for a taste of this simple yet delicious snack.

It all started with a seriously delicious hamburger in New York City. Rumor has it that it was this burger that first gave acclaimed Catalan chef Oriol Rovira the idea of opening Sagàs Pagesos y Cuiners (“Farmers and Cooks”) in the Born district of Barcelona. Specializing in high-end sandwiches, the restaurant embraces the farm-to-table philosophy, with a menu that is both distinctively Catalan and international in scope. Rovira, who also runs Els Casals, a Michelin-starred restaurant in the tiny village of Sagàs near the edge of the Pyrenees, opened his sandwich spot in May 2011. As at Els Casals, nearly all of the food at the Barcelona venue comes straight from the chef’s village farm. But why sandwiches?

Once the province of late-night slurping at street carts or standup counters, instant meals and cheap dining, ramen has undergone a renaissance over the last 15 years, making it onto haute hipster tasting menus in the West and creating punishing waits outside the “it” ramen-ya of Tokyo and Osaka. As the New Year began we decided to revisit the roots of classic ramen dining in Tokyo and paid a visit to the original Afuri ramen stand in Ebisu. Could it already have been 14 years since this place opened its doors to a hungry mob?

One of Lisbon’s best views is just steps away from Largo da Graça in Saint Andre, one of the city’s seven hills. The famous overlook offers views of most of the city and even some of the Tejo river. Most days it’s filled with a mix of tourists making good use of their selfie sticks, wanderers minding their own business and street musicians busking for small change. But locals – or, at least, locals who like to eat well – prefer to hang out a few meters back, at one of the neighborhood’s iconic restaurants. O Pitéu da Graça could also be described as having an excellent view – but only if you like looking at fish. Yes, the thing to see here is the menu’s crowded fish section.

To make excellent octopus broth, you must first fill a huge pot with water to the brim – at least 20 liters – bring it to a boil, add salt and pepper in industrial quantities and immerse four large octopuses. After 33 minutes (and not one more) of simmering, it’s ready: the octopus has reached the perfect consistency. Yet in Naples there’s a saying, “The octopus cooks in its own water” – a proverb that means that a person needs to get to the truth on his own and in his own time. Lello tells us that what this saying is referring to isn’t actually true, since clearly, an octopus needs much more water than what it comes with to actually cook.

On the left bank of Tbilisi’s Mtkvari River in the Plekhanov district is David Aghmashenebeli Avenue, a thoroughfare long associated with wallet-friendly Turkish restaurants and discount clothing boutiques. Some 15 years ago, the crumbling 19th-century buildings and huge eucalyptus trees that lined the street were crowded with people hawking everything from wooden utensils to costume jewelry, fresh produce and coffee beans labeled “Nescafé.” It was a congested, lively sidewalk bazaar of sorts that exemplified the Asiatic spirit of Tbilisi. However, a massive urban renewal project in 2011 put an end to the colorful disorder. Today, most of Aghmashenebeli is a sensible European-looking boulevard that the former President of Georgia likened to Paris, although the Turkish restaurants are still there serving up tasty Anatolian specialties.

It was a great disappointment for Francesco, owner of this tripe shop in Naples, to learn that the website, Tripadvisor, was not just about entrails. Wouldn’t it be great if it were?

On the last floor of a high building in Marquês de Pombal – Lisbon’s financial and commercial area – is the headquarters of the Associação Cabo Verde, the oldest of its kind in the capital. Its unexpected location aside, it draws many from the community who need support with issues relating to law and integration issues and acts as a central meeting point for all types, including academics. As well as organizing events focusing on post-colonial Cape Verde and its diaspora, the association also hosts regular festive lunches (almoço dancantes), with live music on Tuesdays and Thursdays.

Cape Verdeans, particularly those from the island of Santiago, form one of the biggest migrant communities in Portugal. Because of the cyclical drought that afflicts the 10 volcanic islands making up this archipelago, the country’s sense of homeland coexists with the idea of movement, with Cape Verde recognized by many as an essentially diasporic nation.