Learn Spanish (Latin America): ¿Dónde encuentras un parque tranquilo?

The base form of the verb is encontrar (to find), but it is a stem-changing verb. When we conjugate it in the present tense, the o in the middle changes to ue for most forms, including the informal "you" form, making it encuentras.

Where is the word for "do" in this question?

Spanish doesn't use helper verbs like "do" or "does" to ask questions. The single word encuentras means "you find", "are you finding", and "do you find". The upside-down question mark at the beginning of the sentence is what signals that it is a question.

Why does tranquilo come after parque?

In Spanish, descriptive words (adjectives) almost always come right after the thing they describe. So instead of saying "a quiet park" like in English, you say "a park quiet" (un parque tranquilo).

Why does Dónde have an accent mark on the o?

All question words in Spanish get an accent mark when they are used to ask a question. This is a handy rule for words like dónde (where), qué (what), and quién (who).