Tetuán forms part of the Central Business District, which borders with Chamartín, Chamberí and Moncloa-Aravaca. It is home to important commercial areas and high-quality residential buildings. The financial district of AZCA is home to the HQ of Google Madrid. Important architecture includes the Puerta de Europa and Torre Picasso buildings. Tetuan is a very wealthy area, full of shops, restaurants and hotels. Mélia Castilla and Hotel Exe Madrid are popular choices for tourists, as well as the NYX Hotel. They offer 4-star accommodation with private pools and views of the city. Some landmarks include poetic plazas and the Aqueduct of Amaniel. There are a number of metro stations in the area, so it is an easy train ride from Tetuán to Madrid city centre.