If you plan to take your Baltimore trailer rental into the city, it's worth noting that downtown traffic is infamous. Baltimore ranks as one of the top 50 most congested cities in the world. That said, Baltimore does have an extensive public transport system, so consider parking on the outskirts of the city and using the subway or light rail services to get around.
Baltimore's biggest tourist attraction is the National Aquarium. Welcoming over 1.5 million visitors annually, the National Aquarium is the largest aquarium in Maryland, with roughly 20,000 animals on display. Highlights from the collection include Atlantic bottlenose dolphins, giant Pacific octopuses, and sand tiger sharks. For an extra fee, you can join in on a dolphin training session, walk on a catwalk over shark-infested water, or plan a sleepover at the aquarium.
No trip to Baltimore is complete without a tour of Fort McHenry National Monument. Fort McHenry played an essential role in the Battle of Baltimore during the War of 1812. During this battle at Fort McHenry, Francis Scott Key wrote "Defence of Fort M'Henry." The poem would eventually be turned into the U.S. national anthem, "The Star-Spangled Banner." Visitors can take a self-guided tour of the fort to learn more about its role in American history.
Looking for somewhere to escape the hustle and bustle of downtown for a couple of hours? Patterson Park is one of the best parks in Baltimore, offering 133 acres of manicured lawns to enjoy. Patterson Park is popular with birdwatchers, with great blue herons, great egrets, and American coots visiting the area. Ensure you visit the Patterson Park Pagoda, an observatory, during your visit. This 60-foot tall pagoda-style building sits atop Hamstead Hill, and visitors can climb to the top of the tower and take in a panoramic view of Baltimore.