With the current situation of the world due to COVID-19, it makes traveling internationally quite difficult and in some cases, simply impossible. While we may not be able to travel internationally anytime soon, (safely) travel domestically. Luckily, there are so many beautiful places and cities to explore in the US. Here are some charming U.S. cities to visit for a city vacation this summer: San Francisco, CaliforniaSan Francisco is a city where you are surrounded by nature. With the bay, the Pacific Ocean, parks and greenery scattered throughout the city, you can stop off for a nature break as you explore the city. It is a popular spot for nights…