3 must-see hop-off attractionsPorto has so much to offer. If you're not sure which attractions are worth visiting then be sure to hop off at these wonderful locations. Take the Red Line and hop off at bus stop 11 to take in the sensational architecture of the Sé Catedral, also known as Porto Cathedral. It's one of Porto's oldest landmarks. At bus stop 1 on the Blue Line, you'll find yourself by the Torre dos Clérigos, a tall, elegant bell tower that's visible from all over the city! Further along the Blue Line at bus stop 10 is the Museu do Vinho de Porto, a port wine museum, perfect for those avid wine lovers! You'll learn all about where port comes from, how it's made and how the process has been developed over generations.