San Diego is a beautiful city in Southern California with many popular attractions to visit. Some popular places to tour in San Diego include:

1) The San Diego Zoo: Known for its impressive collection of animals from around the world, this zoo is a must-see for families and animal lovers.

2) Balboa Park: This urban cultural park is home to several museums, gardens, and the famous San Diego Zoo.

3) USS Midway Museum: Located in the harbor, this museum is a retired aircraft carrier that visitors can explore and learn about its history.

4) La Jolla: This coastal community is known for its beautiful beaches, coves, and sea caves.

5) Old Town San Diego: This historical area features buildings and artifacts from the city’s early days as a Spanish settlement.

6) Coronado Island: A short ferry ride from downtown, Coronado Island is home to the famous Hotel Del Coronado and offers great beaches and views of the San Diego skyline.

7) Legoland California: A family-friendly theme park built entirely out of Lego bricks.

8) SeaWorld San Diego: This marine life theme park is home to many sea animals, including killer whales, dolphins, and sea lions.

9) Pacific Beach: A popular beach area with a lively boardwalk and plenty of shops, restaurants, and bars.

10) San Diego Bay: Take a boat tour to see the San Diego skyline, the USS Midway and many other navy ships, and possibly catch a glimpse of some marine life.