5 Smallest Countries in the World to Explore In Just One Day in 2025

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Ever wished to explore an entire country and still make it home in time for dinner?

Referred to as “micro-nations,” some of the world’s nations are so minute that they can be explored in just one day, even without trains, taxis, and bikes.

Whether a got-to-be-back-at-work weekend trooper or a time-strained adventurer, these smallest nations may be tiny on the map, but each is rich in culture, charm, and experience in its own way.

Smallest Countries to Explore in A Day

From charismatic European neighborhoods to tropical island troves, fit these tiny countries in your pocket, packed with cultural, historical, and natural wonders.

1. Vatican City

Spanning across just 121 acres (0.49 sq. km), Vatican City is the world’s smallest country, not only by area but also by population, with only 825 residents.

Though the smallest country on the planet, this city-state is the only country to be entirely listed as a UNESCO World Heritage Site in 1984.

The heart of Roman culture and history is home to some of the world’s most significant artistic and historical works, drawing millions of tourists, both art and history enthusiasts alike.

Places to Explore

St. Peter’s Basilica: A 120-year-old Renaissance architectural wonder, featuring Michelangelo’s paintings and his famous sculpture of faith and sorrow. Ascend one of the world’s largest Domes, housing Bernini’s Baldachin, a delicate canopy veiling St. Peter’s tomb.

The Vatican Necropolis: An underground burial site beneath St. Peter’s Basilica, which also houses ancient Roman tombs.

The Vatican Museums: To witness a vast collection of art and ancient antiquities, dating back to ancient civilizations. From the iconic ceiling frescoes painted by Michelangelo in the Sistine Chapel, depicting scenes from the Old Testament, to Raphael’s artistic frescoes, such as “The Hall of Constantine,” at the Stanze della Segnatura.

The Gallery of Maps: Displaying the topographical maps of Italy drawn in the 16th century.

The Vatican Library: Home to a unique collection of books, manuscripts, and other historical documents.

The Castel Sant’Angelo: A 2000-year-old castle, formerly a mausoleum for Roman emperor Hadrian and his family. Relax in the secluded oasis of the Vatican Gardens, adorned with fountains, sculptures, and lush greenery all around.

Food & Culture

Grab a bite of traditional Italian food at Borgo Pio Street, lined with Italian restaurants, with Cafe Vaticano within the Vatican Museums. Try the classic Roman dishes, such as carbonara and cacio e pepe, in local eateries.

2. Monaco

Covering an area smaller than New York’s Central Park, Monaco is the world’s second smallest sovereign state.

Set along the French Riviera in Western Europe, this Mediterranean country captivates with its impressive yachts, glamorous casinos, energetic F1 racetracks, and fine Michelin-starred dining. Visitors can take in many of Monaco’s highlights within a single day.

Places to Explore

Take a leisurely walk along the deep-water port of Monaco, Port Hercules, and take in the serene views, reflecting the forgotten maritime history.

Learn about Monaco’s royal history at the Prince’s Palace, sheltering elite figures since the 13th century. Wander along the palace’s square and witness the Changing of the Guard ceremony held daily at 11:55 a.m.

Visit the cliffside Oceanographic Museum, effortlessly blending dramatic ocean views with marine biology and ocean exploration.

Capture the spectacular views of the city from a 62-meter-tall monolith, the Rock of Monaco, perched above the Mediterranean Sea. Visit the Cathedral de Monaco, a Romanesque architecture, displaying intricate mosaics and tombs of past princes. Capture the beauty of Saint Martin gardens, covered with Mediterranean flora blended with medieval fortifications.

Take in the serene and historical aura of the city as you stroll through the winding streets of the Old Town, dotted with colorful buildings, historic squares, and local artisan shops.

Bet the luck at Monaco’s iconic casinos, including the architectural masterpiece- Monte Carlo Casino.

Food & Culture

Savor the regional taste of Mediterranean flavors, serving fresh seafood and classic meat cuisines. Choose from the Michelin-starred bistros and lounges near the Casino and in the Metropole Shopping center. Discover the dazzling collection of vintage cars at Voitures Anciennes.

3. Nauru

Covering an area of just 21 sq km, Nauru is the third-smallest country to explore in only 5–6 hours. Settled by Micronesians around 3,000 years ago, this South Pacific island nation, also known as Pleasant Island, stands out for its phosphate mining, vibrant indigenous culture, and traditions in art and music.

Places to Explore

Capture the scenic views from the Buada Lagoon, a freshwater lake heavily used by the locals to breed fish.

Uncover the island’s world war-era history at the historical Command Ridge, showcasing remnants of communication bunkers, weather stations, and Japanese guns.

Swim in the pristine waters of Anibare Bay, offering unique views of wooden pinnacles.

Explore the remnants of phosphate mining along the lunar-shaped landscape of Central Plateau.

Glimpse into the island’s rich artistic heritage through photographs, tools, and artifacts at the National Museum.

Food & Culture

Go snorkeling amid the diverse marine ecosystem of Nauru deep under the water. Witness the unique coral formations, colorful fish, and sea turtles. For a more immersive experience, explore the Moqua Caves, which hide underground pools and rock formations.

Sample the traditional cuisine, such as fresh seafood, coconut-infused rice, palusami, and seasonal tropical fruits.

4. Liechtenstein

Perched between Austria and Switzerland, Liechtenstein spans about 160 sq km, ranking as the sixth smallest country you can explore in a day.

This German-speaking principality draws visitors with its stunning alpine settings, historic castles, and rich cultural experiences. Both its capital and countryside blend ancient traditions, modern flair, and scenic adventure.

Places to Explore

Visit the historic Vaduz Castle, reflecting various architectural styles from the 12th century to the present day.

Explore the well-preserved Gutenberg Castle, offering stunning views over Liechtenstein. If visiting during the weekends, visit the castle’s rose garden and chapel, which opens every Sunday.

Visit the iconic national museum, showcasing the centuries-old history and culture from the Stone Age to modern times.

Walk across the wooden Old Rhine Bridge, connecting Liechtenstein with Switzerland.

Walk through the postal history of Liechtenstein at the Postal Museum. Explore the halls of Treasure Chambers, exhibiting valuable items from the Princely collectibles.

Food & Culture

Enjoy wine tasting sessions at the Prince’s winery or along the Rhine River. For adventure souls, hike along the trails of Ruggell and stop by the local shops and cafes for cheese-layered noodles and Ribel, a cornmeal dish on the way.

5. San Marino

San Marino, the world’s oldest republic, founded in 301 AD, comprises about 61 sq km area, making it the fifth-tiniest country in the world.

This landlocked country in Southern Europe is famed for its medieval heritage and distinct historic and cultural influences in architecture, gastronomy, and artistry.

Places to Explore

Stroll the cobblestone streets of the Old Town, lined with local cafes and souvenir stalls. Or take the cable car to Mount Titano for panoramic views of the city from above.

Explore the ramparts of the iconic Three Towers, the defense fortresses that once protected the country from invasion. Take the ‘Witches’ Passage’ to travel between the towers.

Browse a diverse collection of archaeological findings and artworks at the State Museum, or learn about the art of weaponry at the Museum of Ancient Arms, which houses centuries-old weapons.

Savor the hearty culinary influences of Italian dishes, like bean and bacon soup, rabbit stew, and the Three Towers-inspired multi-layered cake, paired with locally brewed wines.

Explore San Marino’s old coins, stamps, and other collectibles at the Fancobollo e della Moneta

Food & Culture

Explore the neighborhoods of Borgo Maggiore to sample piada, a traditional stuffed bread. For a fine dining experience, Ristorante Righi and Ritrovo dei Lavoratori are the best places to eat in San Marino.

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