Hi HN,<p>I've gotten some good travel suggestions from here before (thank you for the US national park advice!) so thought I'd ask again as I'm feeling a bit stumped.<p>Solo female traveler for context.<p>I have a business trip to Warsaw in September and am able to go a week early. I can fly into nearby or other airports. I'm feeling a little uninspired so all suggestions welcome.<p>Option 1: Fly into Helsinki, take the ferry to Tallinn, rent a car through Baltic Net car rentals that does 1-way rentals from Tallinn to Warsaw and then drive to Riga, Lithuania and then Warsaw.<p>Option 2: Fly into Berlin, see Berlin, then drive to Leipzip, Dresden, Prague, Wroclaw, Lodz and then Warsaw.<p>Option 3: Other suggestions??<p>I've already seen Copenhagen, Krakow, the salt mine, Auschwitz, Budapest and Zagreb so don't want to revisit those.<p>Feeling a little intimidated to do the Helsinki/Tallinn/Riga/Lithuania route solo. I'm pretty adventurous but for some reason that makes me a little nervous.<p>Any thoughts/suggestions? Thank you for any ideas!