Day 1: Exploring the Historic City

Start your day off with a visit to the iconic Tiananmen Square, where you can take in the grandeur of the Forbidden City and learn about China's history and culture at the National Museum of China. From there, take a short walk to the Qianmen Pedestrian Street for some souvenir shopping and a taste of traditional Beijing snacks. In the afternoon, visit the Temple of Heaven, an ancient imperial complex where emperors once offered sacrifices to heaven.

Day 2: Trekking the Great Wall

Dedicate your second day to trekking the Great Wall of China. There are various sections of the wall that you can choose from, each with its unique features and challenges. If you're looking for a less crowded but equally scenic spot, consider hiking the Jinshanling section or Simatai section. Make sure to wear comfortable shoes and bring plenty of water and sunscreen. After the trek, head to a local restaurant for a hearty meal of traditional Chinese cuisine.

Day 3: Discovering Beijing's Modern Side

Spend your third day exploring Beijing's modern side. Start by visiting the iconic Bird's Nest Stadium and National Aquatic Center, both of which were used during the 2008 Beijing Olympics. From there, take a stroll through the trendy 798 Art Zone, where you can admire contemporary art and browse unique boutiques. End your day with a visit to the Wangfujing shopping district, known for its luxury retail brands and delicious street food.

Day 4: Immersing Yourself in Nature

On your final day, escape the hustle and bustle of the city and explore Beijing's natural beauty. Start by visiting the Summer Palace, a UNESCO World Heritage Site known for its beautiful gardens and tranquil lake. From there, head to the Fragrant Hills Park, where you can take a hike through the stunning autumn foliage and appreciate the breathtaking views of the city from the mountain peak. End your day with a visit to the Temple of Azure Clouds, a quiet retreat nestled in the hills that offers stunning views of the city and a window into China's spiritual past.

With this four-day travel itinerary, you can experience the best of Beijing's history, culture, nature, and modernity. Whether you're a first-time visitor or a seasoned traveler, Beijing has something to offer for everyone.