The Westin Riverwalk San Antonio Loading Map.... The Westin Riverwalk San Antonio420 W Market Street - San AntonioEvents 29.4234439 -98.49089219999996 Address 420 W Market Street San Antonio TX 78205 United States Upcoming Events No events in this location Share: Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.