¡Qué
bonito!
¿Me
podría
tomar
una
foto,
por
favor?
keh boh-NEE-toh meh poh-DREE-ah toh-MAHR OO-nah FOH-toh pohr fah-VOHR
How beautiful! Could you take a photo of me, please?
"¿Me podría...?" (Could you...for me?) is the polite conditional form — perfect for asking favors of strangers.