It’s easy to miss Altair Teahouse, a lovable underground tea house located along a sleepy side street behind the National Museum in Budapest's Palace Quarter. Defying space limitations, they've managed to squeeze three floors of tiny nooks separated from each other by curtains and pillows, and sitting on inserted wooden platforms. The dimly lit, labyrinthine indoor makes for an ideal date spot or for a bit of seclusion from the hustle and bustle of city center, just minutes away. Besides the endless tea options, Altair also offers a selection of (hot) wines, beers, spirits, as well as hookahs (water pipes). There is a no-shoes policy, so make sure your socks are on point.