//app.component.ts
import { HttpClient } from '@angular/common/http';
...

export class AppComponent {

constructor(private http: HttpClient){}

useApi(){
this.http.get(`https://maps.googleapis.com/maps/api/place/textsearch/json?query=museo%ara$pacis&key=[MY-KEY]`)
.subscribe(res => console.log(res))
}