Copenhagen is the capital and most populous city of Denmark. It is a lively city with a rich history and culture, and plenty for visitors to see and do. From world-class museums and galleries to beautiful parks and gardens, Copenhagen has something to offer every traveler. Here are the top 5 attractions that no visit to Copenhagen is complete without:

#1 TIVOLI GARDENS

No trip to Copenhagen is complete without a visit to the iconic Tivoli Gardens. Opened in 1843, Tivoli is one of the oldest amusement parks in the world. With its charming gardens, amusement rides, concerts, theaters, restaurants and food stalls, Tivoli provides endless entertainment. At night, thousands of lights illuminate the gardens, creating a magical atmosphere. Make sure to ride the historic wooden rollercoaster from 1914 for an old-world thrill. With over 4 million visitors per year, Tivoli is Copenhagen's most popular tourist attraction.

Some tips for visitors would be useful:
- Tivoli is open from mid-April to late September each year. Opening times vary by month, so check the website for exact hours before visiting.
- Purchase a multi-ride ticket to enjoy unlimited rides or a Copenhagen Card for admission plus free transportation and discounts at other attractions. Individual ride tickets can add up quickly.
- Arrive in the evening to see Tivoli illuminated at night. On Fridays, fireworks light up the sky.
- Stop for a meal at one of Tivoli's restaurants, like the historic Nimb Hotel's Brasserie or Gemyse restaurant specializing in seasonal vegetables.
- Don't miss the Tivoli Concert Hall, which hosts musical performances from rock concerts to symphonies. The impressive curved glass facade was inspired by an organ.
- Ride the Star Flyer, one of the world's tallest carousels, for stunning panoramic views over Tivoli.

#2 THE LITTLE MERMAID STATUE

One of Copenhagen's most iconic sights is the Little Mermaid statue located at Langelinie promenade. Designed by Edvard Eriksen, the bronze statue was unveiled in 1913 as a tribute to Danish storyteller Hans Christian Andersen. The mermaid sits on a rock at the waterside, looking longingly out to sea. This famous statue has become a symbol of Copenhagen and attracts visitors from around the world. It's quite small at only 1.25 meters tall, but it's a must-see when visiting Copenhagen.

Some tips for visitors would be useful:
- The statue was inspired by Danish author Hans Christian Andersen's fairy tale The Little Mermaid, written in 1837.
- The mermaid's face was modeled after ballerina Ellen Price, while the body was modeled after Andersen's niece.
- It was commissioned by brewer Carl Jacobsen, son of the founder of Carlsberg Brewery, after he was captivated by a ballet performance of the Little Mermaid tale.
- The statue has been defaced and damaged over the years by vandals, but has been restored each time. It is now under 24-hour video surveillance.
- Visitors often touch the mermaid's knees or sit beside her for photos at one of Copenhagen's most popular selfie spots.

#3 ROSENBORG CASTLE

Rosenborg Castle is an architectural wonder in the heart of Copenhagen. Built in the early 17th century, this castle was used as a royal residence until the 18th century. Now it houses the Danish crown jewels and royal regalia in the basement Treasury. The upstairs castle is elaborately decorated with tapestries, portraits, furniture and more. The castle is surrounded by the King's Garden, the oldest royal garden in Denmark. Take a guided tour to admire the interior splendor and learn about the castle's fascinating history.

Some tips for visitors would be useful:
- The castle was built between 1606-1624 by King Christian IV in the Dutch Renaissance style with inspiration from Venetian palaces.
- The King's Garden surrounding the castle features statues, fountains, and immaculately trimmed hedges in geometric patterns.
- The castle's Long Hall was used to host royal events. Its walls are lined with 27 tapestries depicting Danish victories in battle.
- The basement Treasury has an extensive collection of crown jewels, swords, garments, and other items belonging to the Danish monarchs.
- Changing exhibitions are also held inside the castle, often highlighting royal portraits or tapestries.

#4 NATIONAL MUSEUM OF DENMARK

For insight into Denmark's history and culture, spend time at the National Museum of Denmark. Established in 1892, it has an extensive collection covering 14,000 years from prehistory to the 21st century. Marvel at Danish archaeological treasures including Viking weapons, rune stones and bog bodies. Peruse the ethnographic exhibits showcasing artifacts from Greenland, the Faroe Islands and other territories. Don't miss the Sun Chariot from the Bronze Age, one of the museum's most prized possessions. With free admission, it's easy to immerse yourself in the story of Denmark.

Some tips for visitors would be useful:
- The museum has two sites - the Prince's Mansion in downtown Copenhagen and Brede Works in northern Zealand.
- Purchase a Copenhagen Card for free admission to the museum and transportation between the two sites.
- Top exhibits include Viking archaeological finds, Danish coins and medallions, ethnographic objects from Greenland, and Danish military history.
- Free guided tours in English take place daily - check times upon arrival.
- The museum has a hands-on experimental archaeology workshop for kids to try activities like grinding grains and weaving.

#5 NYHAVN

Soak up Copenhagen's charm with a stroll along the colorful waterfront district of Nyhavn. This picturesque canal is lined with 17th and 18th century townhouses painted in vibrant reds, yellows and blues. Once filled with sailors and pubs, it is now a lively entertainment area filled with restaurants and bars. Grab a seat at a sidewalk cafe, order a Danish beer and watch the boats glide by on the canal. Be sure to sample a traditional Danish open-faced sandwich. With its scenic atmosphere and lively energy, Nyhavn is a delightful place to experience Copenhagen.

Copenhagen offers something for every type of traveler, from amusement park rides to world-class museums. With its rich history, charming canals and lively atmosphere, it's easy to see why Copenhagen is consistently ranked as one of the happiest cities in the world. Use this guide to make sure you hit the top attractions on your next visit to this wonderful Scandinavian capital.